



                             DragStrip Plus
                                                                 
                             User's Manual
                                                                 
                                                                 
                                                               

                             Version 4.XX










Table Of Contents                                               3

License Notices                                                 9
     Copyright Notice                                           9
     Limited Warranty                                           9
     DRAGSTRIP PLUS Disclaimer                                 10
     WARNING                                                   10
     Limitation Of Liability                                   10
     Trademarks                                                10

DRAGSTRIP PLUS History & Credits                               11
     History And Credits                                       11
     Introducing DRAGSTRIP PLUS                                13
     About DRAGSTRIP PLUS                                      13

Using This Manual                                              17
     Using Manual                                              17
     Typographical Conventions                                 17

System Requirements                                            19
     Hardware Requirements                                     19
     Software Requirements                                     19

Chapter One:  Getting Started                                  21
     Program Installation                                      21
     Program Configuration                                     22
     Setting Your Password                                     22

Chapter Two:  Using DragStrip Plus                             23
     Quick Tour Of DragStrip Plus                              23
     DragStrip Plus Hot Keys                                   32

Chapter Three:  Using An Analysis Mode                         33
     Choosing The Correct Analysis Mode                        33
     Quick Compute Mode                                        33
     Detailed Analysis Mode                                    34
     Dyno Approach Mode                                        35

Chapter Four:  Using Quick Analysis                            37
     The Quick Compute Mode                                    37

Chapter Five:  Entering Your Combination                       39
     Analysis Mode                                             39
     Driver's Weight                                           39
     Vehicle's Weight                                          39
     Weight Change                                             39
     Nitrous Oxide Use                                         40
     Amount Of Nitrous Oxide Horsepower                        40
     Stall Point                                               40
     Exhaust System                                            41
     Tire Height                                               41
     Tire Selection                                            41
     Traction                                                  42
     DragStrip Plus' Traction Definitions                      43
     Name Your Vehicle                                         43
     The E.T. Results Screen                                   44
     Making Changes To Your Vehicle Combination                45
     Header Tubes                                              46
     Header Tube Size                                          46
     Exhaust Tube Size                                         46
     Engine Size                                               46
     Number Of Engine Cylinders                                47
     Engine Manufacturer                                       47
     Engine Type                                               47
     Transmission Selection                                    47
     Number Of Transmission Gears                              47
     Transmission Gear Ratios                                  47
     Finish Line Gear                                          48
     DRAGSTRIP PLUS Camshaft Type                              48
     Total Camshaft Duration                                   48
     Camshaft Duration At .050"                                49
     Valve Lift                                                49
     Camshaft Lobe Centers                                     50
     Camshaft Overlap                                          50
     Cam Installation Timing                                   51
     Intake Valve Size                                         51
     Exhaust Valve Size                                        51
     Rocker Arm Ratio                                          51
     Carburetor Type                                           52
     Carburetor Size or CFM                                    52
     Air Induction                                             52
     Superchargers                                             53
     Turbochargers                                             53
     Turbocharger / Supercharger Boost                         53
     Number of Turbochargers                                   53
     Intercooler Selection                                     54
     Manifold Selection                                        54
     Ignition Selection                                        54
     Piston Selection                                          54
     Engine Compression                                        54
     Cylinder Head Selection                                   55
     Cylinder Head Porting                                     55
     Engine Fuel                                               55
     Fuel Pump                                                 55
     Engine Quality                                            56
     Elevation                                                 56
     Air Temperature                                           57
     Relative Humidity                                         57
     Barometric Air Pressure                                   57
     Engine Temperature                                        57
     Vehicle Body Style                                        58
     Body Style Frontal Area                                   58
     Driver Experience                                         58
     Give Your Vehicle A Name                                  58
     E.T. Results Screen                                       58

Chapter Six:  E.T. Discrepancy Errors                          61
     E.T. Discrepancy                                          61

Chapter Seven:  Analysis And Ratings                           63
     Engine Analysis And Ratings                               63

Chapter Eight:  Combination Advice                             67
     DRAGSTRIP PLUS Combination Advice                         67

Chapter Nine:  Combination Changes                             71
     Vehicle Data Screen                                       71
     Engine Data Screen                                        73

Chapter Ten:  Using Dyno Mode Analysis                         75
     Using The Dyno Approach Mode                              75
     Engine Horsepower                                         75
     Gross And Net Horsepower                                  75
     Driver's Weight                                           76
     Vehicle's Weight                                          76
     Weight Change                                             76
     Nitrous Oxide Use                                         76
     Amount Of Nitrous Oxide Horsepower                        76
     Nitrous Horsepower Usage                                  77
     Stall Point                                               77
     Exhaust System                                            77
     Tire Height                                               78
     Tire Selection                                            78
     Traction                                                  78
     DragStrip Plus' Traction Definitions                      79
     Naming Your Vehicle                                       80

Appendix  A                                                    81
     Changing Computer's Shift Point                           81
     Transmission Slippage Change                              81

Appendix  B                                                    83
     Unfinished Vehicle In Database                            83
     Vehicle Database                                          83
     Vehicle Database Information                              84

Appendix  C                                                    85
     Vehicle Weights                                           85

Appendix  D                                                    87
     Parameter File and Ratings File Documentary               87

Appendix  E                                                    91
     Setting Your Dial-In                                      91

Appendix  F                                                    93
     Upcoming New Products                                     93
     












License Notices







Copyright Notice

          This  manual and other accompanying written  and  disk-
          based notes and specifications, and all referenced  and
          related  program files accompanying this document,  are
          copyrighted 1992-1995 by Revolutionary Concepts, Inc.

          No  part of this manual may be reproduced, transmitted,
          transcribed,   stored   in  a  retrieval   system,   or
          translated into any language (natural or computer),  in
          any  form  or  by any means, without the prior  written
          permission of:

                  Revolutionary Concepts, Inc.
                  P.O. Box 690048
                  Houston, Texas  77269-0048
                  e-mail: dragplus@rconcepts.com
 
          You  are  granted a limited license to use the software
          described in this manual.
  
          Information in this manual is subject to change without
          notice and does not represent a commitment on the  part
          of Revolutionary Concepts, Inc.

          Revolutionary  Concepts,  Inc.  may  make  improvements
          and/or changes in this manual and/or in DRAGSTRIP  PLUS
          (computer  program) at any time without  obligation  of
          any kind to the purchaser or owner of DRAGSTRIP PLUS.

          DRAGSTRIP PLUS User's Manual Version 4.0b  Copyright (c)
          1995,  by  Revolutionary  Concepts,  Inc.   All  rights
          reserved.  Cover  designed by Jeff  Williams,  Houston,
          Texas.   DRAGSTRIP PLUS is exclusively  distributed  in
          the United States by Martel Brothers Racing Products.

          FOR ORDERS CONTACT: MARTEL BROTHERS RACING PRODUCTS
                          5328 E. 5th Street
                          Katy, Texas  77493
                     Phone: 1-800-882-RACE  or  (713) 391-7772
                     Fax: (713) 391-8519

          FOR TECHNICAL SUPPORT:   Revolutionary Concepts, Inc.
          Phone: (713) 859-RACE (collect return calls only) or
          E-Mail: dragplus@rconcepts.com

Limited Warranty

          With  respect  to  the physical diskette  and  physical
          documentation,  Revolutionary Concepts,  Inc.  warrants
          same to be free of defects in materials and workmanship
          for a period of 90 days from the date of purchase.   In
          the event of notification within the warranty period of
          defects   in  material  or  workmanship,  Revolutionary
          Concepts, Inc. will replace the defective diskettes  or
          documentation.  The remedy for breach of this  warranty
          shall be limited to replacement and shall not encompass
          any other damages, including but not limited to loss of
          profit,  and  special,  incidental,  consequential,  or
          other similar claims.

DRAGSTRIP PLUS Disclaimer

          USE  OF  DRAGSTRIP PLUS SIGNIFIES AGREEMENT BY USER  TO
          ALL THE TERMS AND CONDITIONS OF THIS DISCLAIMER.  USERS
          OF  DRAGSTRIP  PLUS  MUST  ACCEPT  THIS  DISCLAIMER  OF
          WARRANTY:   REVOLUTIONARY  CONCEPTS,  INC.   MAKES   NO
          WARRANTY  OF ANY KIND, EXPRESSED OR IMPLIED,  INCLUDING
          WITHOUT  LIMITATION, ANY WARRANTIES OF  MERCHANTABILITY
          AND/OR FITNESS FOR A PARTICULAR PURPOSE.  REVOLUTIONARY
          CONCEPTS, INC. ASSUMES NO LIABILITY FOR DAMAGES, DIRECT
          OR  CONSEQUENTIAL, WHICH MAY RESULT  FROM  THE  USE  OF
          DRAGSTRIP PLUS.

WARNING
          Engine  combinations designed and/or built  by  use  of
          DRAGSTRIP  PLUS  or  contained in  DRAGSTRIP  PLUS  are
          designed for competition purposes.  Accordingly, use of
          said DragStrip Plus, or modification to or construction
          of  a  vehicle  and/or  engine  combination  for  those
          purposes  may create dangerous conditions  which  could
          cause  bodily injury, and the buyer and/or users hereby
          expressly  assume  all risk associated  with  any  such
          modifications.

Limitation Of Liability

          In no case shall Revolutionary Concepts, Inc. liability
          exceed  the license fees paid for the right to use  the
          Licensed Software or one hundred and forty-nine dollars
          ($149.95), whichever is less.

Trademarks
          MS-DOS is a registered trademark of Microsoft
          Corporation

          Compaq is a registered trademark of Compaq Computer
          Corporation.

          DRAGSTRIP PLUS is a registered trademark of
          Revolutionary Concepts, Inc.

          IBM is a registered trademark of International Business
          Machines Corporation.


















































DRAGSTRIP PLUS History & Credits







History And Credits

          DRAGSTRIP  PLUS  has  been under  development  using  a
          variety of languages since 1985. DRAGSTRIP PLUS went on
          sale in December, 1992, and the first shareware version
          was produced in August, 1995.
          
          DRAGSTRIP  PLUS does not rely on conventional  formula-
          based   mathematics,  but  instead  uses  sophisticated
          algorithms similar to human-like logic and reasoning as
          its  primary  approach  to  problem  solving  and  data
          analysis.
          
          PAUL I. WILLIAMS
          Program Concept, E.T. logic, Quick Basic programming
          
          FREDERICK L. BRADEN
          C-language programming, program layout, Internet
          services
          
          RON VOTAW
          Animated Computer graphics
          
          LAWRENCE CONLEY
          Senior Technical Advisor
          
          JARVIS W. THOMPSON, PAT McCHAN, PAUL LATOUR, and BOB GULITTI
          Drag Racing Technical Expertise





Introducing DRAGSTRIP PLUS

About DRAGSTRIP PLUS
                                
           INTRODUCING A NEW ERA IN DRAG RACING:  THE
              AGE OF THE COMPUTER DESIGNED ENGINE!


                   WHY YOU NEED DRAGSTRIP PLUS
                                
          DRAGSTRIP PLUS signals the arrival of a whole  new  era
          in  drag  racing...   the age of the computer  designed
          combination.

          DRAGSTRIP  PLUS  takes all the guesswork  out  of  your
          engine design process.  Instead of trial and error, you
          get  a  clear statement of your combination's strengths
          and  weaknesses.  You are able to build  it  right  the
          first time, which saves you time and money.

          DRAGSTRIP PLUS lets you know before reaching the  track
          what  your  combination is going to  do  when  it  gets
          there.   No  more  embarrassment,  no  more  unpleasant
          surprises,  no more swapping and changing parts  trying
          to get your vehicle to perform up to your expectations!

          In  the  never  ending  battle to  stay  ahead  of  the
          competition, DRAGSTRIP PLUS is your winning edge,  your
          "ace  in the hole".  Here's how DRAGSTRIP PLUS can work
          for you:

           IF YOU "GRUDGE" RACE, HERE ARE TWO POPULAR
                     USES OF DRAGSTRIP PLUS:

               1.     Use  DRAGSTRIP PLUS to  find  out  how
                fast  your competition is running, then  use
                that knowledge to beat them!

                Then,  as fast as your competition tries  to
                improve, use DRAGSTRIP PLUS to discover  how
                their   performance  has  been  helped   (or
                hurt!)  by  the changes they make  to  their
                combinations,  even  before  your  opponents
                can find out themselves!

                They'll  never  know how you  seem  to  know
                more  about  their cars than they  do  --nor
                why  you are able to race and beat them with
                such confidence!

                TIP:     Use DRAGSTRIP PLUS' "Quick Compute"
                    mode   to   predict  your  competition's
                    performance  if  you are  only  familiar
                    with  your  opponents' basic combination
                    and finish-line MPH (or RPM).

                If  you  are thoroughly familiar  with  your
                opponents' combination, use DRAGSTRIP  PLUS'
                "Detailed   Analysis"   mode   to   get    a
                comprehensive     analysis      of      your
                competition's performance.

                NOTE:       Both  of  these  techniques  are
                     explained  in greater detail  later  on
                     in this manual.

               2.     Use  DRAGSTRIP PLUS at home to prevent
                your   competition  from  discovering   your
                E.T.s at the track.  Since you already  know
                what  your vehicle will do when you  get  to
                the  track,  there is no need to  blow  your
                cover.

                Instead,  you can set up races for  yourself
                by   cruising   down  the  track   at   part
                throttle,  pretending  something  is   wrong
                with your engine.

                Then  when  your competition jumps  you  and
                wants  to  race,  you can surprise  them  as
                your engine miraculously "fixes" itself  and
                runs  its  best  E.T. of the  day,  just  as
                predicted in advance by DRAGSTRIP PLUS.
                                
                  IF YOU ARE AN ENGINE BUILDER:

                1.    Use  DRAGSTRIP PLUS to design original
                engines    of    incredible    power     and
                unparalleled   performance.    Or   if   you
                prefer,  use DRAGSTRIP PLUS to build engines
                of  ordinary performance, but possessing new
                and  unique  performance capabilities,  such
                as  enhanced  streetability or custom  shift
                point.

                2.      If    you    build   race    engines
                commercially, you can deliver  your  engines
                with  a  printout of DRAGSTRIP PLUS'  engine
                combination  analysis,  with  each  analysis
                based  upon  your customer's likely  vehicle
                setup.

                Even  if your customers are paying for  dyno
                work  and  are expecting a dyno printout  to
                accompany   their  engine,  you  can   still
                include   a  printout  of  DRAGSTRIP   PLUS'
                combination advice.

                You  will discover that your customers  will
                come  to  value  the computer  aided  advice
                even  more  than they do the dyno sheets  --
                after  all, DRAGSTRIP PLUS' primary goal  is
                fastest  possible  E.T.s,  in  contrast   to
                dyno's  focus  on  maximum  possible  engine
                horsepower.
          
          
                      IF YOU BRACKET RACE:

          DRAGSTRIP  PLUS  was  primarily designed  to  help  the
          performance enthusiast and combination engine  builder.
          But  DRAGSTRIP  PLUS  can  be significant  aid  to  the
          bracket racer as well.  Here how:

                1.    If  you wish to drop your vehicle into
                the  next  fastest bracket racing  category,
                use  DRAGSTRIP PLUS to work out the  easiest
                and  most  practical method to accomplishing
                this for the least amount of money spent.

                2.     You   can  use  DRAGSTRIP   PLUS   to
                precisely  set your track "dial  in",  based
                upon your previous dial-ins.

          After  you have gained a thorough operational knowledge
          of  DRAGSTRIP  PLUS, consult Appendix E for  additional
          information on this technique.

          Don't get left behind...  No matter what race
          application, let DRAGSTRIP PLUS work for you.  Don't go 
          racing without it!
          
          DRAGSTRIP  PLUS,  the  intuitive  racing  software,  is
          everything you'll ever need in racing software!  Here's
          a brief summary of its major features:

          Specialized  Equipment.  DRAGSTRIP PLUS does  not  need
          dynometer,   flowbench,  air  mass  meter,   or   other
          specialized technical data for program input.  You need
          only an IBM or compatible computer.

          Vehicle  Specs.   Does not need your vehicle's  current
          E.T.,  MPH, finish-line RPM, or horsepower to  generate
          its  results.  Needs only the specs of your vehicle and
          engine's parts.

          Reports.   Provides  specific  reports  detailing  your
          engine's performance, including suggestions on how best
          to  improve  its performance.  Forecasts  with  uncanny
          accuracy  the precise E.T. your vehicle will  run  once
          you make its suggested changes.

          Calculations.   Automatically  calculates  the  correct
          gear, stall, shift point, and carburetor size for  each
          combination's  optimum performance,  and  computes  its
          gross and net horsepower.

          Database.   Stores up to 115 vehicles in  its  database
          for quick and easy retrieval.

          Context-Sensitive Help.  DRAGSTRIP PLUS gives you full-
          screen  detailed help no matter where you  are  in  the
          program.   The  context-sensitive help facility  always
          knows "what you are doing" and displays applicable help
          on the current task.
          












Using This Manual







Using Manual

          This  manual provides general information and  specific
          instructions  you'll need to use the many  features  of
          DRAGSTRIP  PLUS.  It includes a tutorial  to  lead  you
          through four example combinations.

Typographical Conventions

          To  avoid  confusion,  we've used distinct  conventions
          throughout  this  manual to represent keys  you  should
          press and information you should type.

            A key you should press appears like this:  <ENTER>.

            A  key  combination like <ALT><F1> means  you  should
            hold  down  the  <ALT> key while you press  the  <F1>
            key.

            The spacebar key appears like this:  <SPACE>

            A  numeric  zero appears like this: 0.  An  uppercase
            letter "oh" appears like this: O.

            A  command you need to type exactly as shown  appears
            like this:
            copy a:*.*
          












System Requirements







Hardware Requirements

          Minimum:  COMPAQ, IBM, or compatible personal  computer
          or  laptop  with MS-DOS Version 2.1 or higher operating
          system,  640K  RAM memory, 3 1/2" high  density  floppy
          disk  drive, hard drive with 1 mb free disk space; CGA,
          EGA, VGA, Monochrome, or LCD monitor.

Software Requirements

          DISKCHK                  RACE0xx.RTS
          INSTALL.BAT              RACE1xx.HLP
          HARDDRIVE.TXT            RACE2xx.HLP
          MANUAL.DOC               RACE3xx.HLP
          MANUAL.TXT               RACE4xx.HLP
          RACE.BAT                 RACE007.DB
          RACE.CFG                 RACE4xx.EXE
          RACE.DOC                 README.TXT
          RACE0xx.PRM              WHATSNEW.TXT
          RACEPRM.DOC              RACE.ICO
          
          
          Animation Software is provided on a second disk  as  an
          optional  display feature and is not  required  to  run
          DRAGSTRIP PLUS.  A VGA monitor is  are required to  use
          Animation Software:
               AAPLAY.EXE     DP3.FLI
          












Chapter One:  Getting Started







Program Installation

          Installation and setup of the program is simple.
          FLOPPY DISK INSTALLATION (IF YOU DO NOT HAVE A HARD
          DRIVE)

          1.   Boot your computer system with your own DOS
          diskette (or by whatever means you normally  use to
          boot it).

          2.   Place the DRAGSTRIP PLUS program disk in your
          floppy disk drive.

          3.   Make DRAGSTRIP PLUS the current drive:
               Type: a: (or) b:  {whichever drive contains the
               DRAGSTRIP PLUS program disk}

               Press: <ENTER>

               Type: race

               Press: <ENTER>

          4.    To exit DRAGSTRIP PLUS, press <F10> from
           anywhere in the program, then press     number <4> to
           exit to DOS at the Main Menu.

          HARD DISK INSTALLATION

          1.   Start your computer.

          2.   After your computer boots, place the DRAGSTRIP
               PLUS program disk into your floppy disk      drive.
     
          3.   If any custom menus or application software
               loaded when you started your computer, exit and
               return to DOS.
    
          4.   Make DRAGSTRIP PLUS the current drive:
    
               Type: a: (or) b:  {whichever drive contains the
               DRAGSTRIP PLUS program disk}
               Press: <ENTER>
    
               Type: install
      
               Press: <ENTER>
          
               NOTE:     DRAGSTRIP PLUS will be installed on your
               hard  drive  (drive  C:) in  a  directory  it
               creates  named RACE.  If an older version  of
               DRAGSTRIP   PLUS  already  exists   in   this
               directory,  the old version will be  replaced
               by  the  latest  version of  DRAGSTRIP  PLUS.
               However,  your existing car combinations  (if
               any)  will  be  preserved  and  will  not  be
               overwritten.

          5.   To exit DRAGSTRIP PLUS, press <F10> anywhere in
          the program, then press number <4> to   exit to DOS at
          the Main Menu.

Program Configuration

          DRAGSTRIP PLUS may be executed from either the original
          floppy, or a hard drive, whichever you prefer.  If  you
          choose  to  install DRAGSTRIP PLUS on your  hard  drive
          (recommended), all program files on the original floppy
          must  be  copied to the same subdirectory on your  hard
          drive (done automatically by the Install program),  and
          the program must be executed from this subdirectory.

          NOTE:      It  is important that the user read and
               understand  all Help information provided  by
               the program for its required input data.  On-
               line   Help  is  accessible  throughout   the
               program  by  pressing the  <F1>  key,  or  by
               consulting this manual.

Setting Your Password

          Password protection is provided with DRAGSTRIP PLUS  as
          an  optional feature insure the security of our  user's

          valuable engine combinations.
          If  you so choose, it is easy to enable DRAGSTRIP PLUS'
          password  protection. Just start  DRAGSTRIP  PLUS,  and
          when the program's main menu appears --the main menu is
          the first screen to appear when you start the program -
          -select the "SETUP" option.  Enter a password that  you
          will  remember, as instructed.  The program  will  then
          ask you to confirm your password by entering it again.
          From  now on, the program will ask you for your private
          password to gain access.  If for any reason you wish to
          reverse  this procedure, select the "SETUP"  option  at
          the  main  program  menu, enter your current  password,
          then select the "new password" option.  But instead  of
          entering  a  new password, just press the  <ENTER>  key
          (twice).   This  action will remove your  password  and
          will make it no longer necessary to enter a password to
          gain access to the program.

          SPECIAL NOTE:    If you forget your password, just
                     leave  us a message with your name  and
                     phone  number  together with  a  likely
                     time  you can be reached, and  we  will
                     do our best to assist you.































Chapter Two:  Using DragStrip Plus







Quick Tour Of DragStrip Plus

          If  you are new to DRAGSTRIP PLUS, you will have better
          results if you first experiment with some of the sample
          cars included with the program rather than loading  the
          program and promptly trying to enter your own vehicle.
          Four   example  combinations  are  included   on   your
          DRAGSTRIP PLUS program diskette in the vehicle database
          as a learning aid.

          Like  the other vehicles included with DRAGSTRIP  PLUS,
          these example combinations are not fictitious, but  are
          "real world" cars based in Houston, Texas, that perform
          almost  precisely  the E.T.s, MPHs,  and  shift  points
          displayed by the program.
 
          We  have  included these sample cars  in  your  vehicle
          database as a valuable example of how to make the  best
          use   of  DRAGSTRIP  PLUS.   In  particular,  we   will
          concentrate   on  helping  you  develop   the   thought
          processes necessary to design engine combinations  that
          are  far superior to the combinations developed by  the
          more casual users of DRAGSTRIP PLUS!
 
          Let's  start  our  demonstration by loading  the  first
          example car.  If you do not already have DRAGSTRIP PLUS
          loaded,  start the program by typing "RACE" at the  DOS
          prompt  (see prior sections in this manual for help  in
          installing  the  program  if  necessary),  enter   your
          password  (if  applicable), then when the "Mode  Choice
          Selection"  screen  appears, press <F4>  to  enter  the
          vehicle database.
          
          
          
------------------------------------------------------------------

 SELECT YOUR CHOICE OF PROGRAM ANALYSIS MODES:



 1) `Quick Compute' You supply only parts related to the
     vehicle plus its finish-line MPH or RPM, and DragStrip Plus
     will compute its E.T.  Quick but highly accurate!

 2) `Detailed Analysis'  You supply all engine and vehicle
     parts, and DragStrip Plus will compute everything: the
     vehicle's finish-line MPH, RPM, and E.T., plus provide a 
     comprehensive engine analysis.

 3) `Dyno Approach' You supply the vehicle's gross or net
     horsepower, and DragStrip Plus will compute its E.T. and
     MPH.



F1=HELP    F3=SOUND<ON>    F4=DATABASE    F8=ET SCREEN    F10=END
-----------------------------------------------------------------
          


          Press <F4> to enter the vehicle database.

          
          
File #  Vehicle Name       Elapsed Time MPH   [Current: #12]
-----------------------------------------------------------
1       EXAMPLE CAR (start) 14.03       99.5
2       EXAMPLE CAR (improved)13.19    102.1
3       EXAMPLE CAR (on NOS)12.32      108.7
4       EXAMPLE CAR (best)  10.97      122.5
5       Pro-mod combination! 6.74      203.9
6       GT Mustang (stock)  15.21       91.7
7       The SunChaser Camaro11.62      122.3
8       John's '70 Camaro   12.99      109.9
9       Matt's street Z28   13.85      105.4
10      Big Block Super Car  9.69      138.9
11      Radical Small Block  9.73      142.5
12      Heavy Chevy Pickup  13.51       95.3
13      528 CID T-Bird!      8.81      158.0
14      Big Block Camaro    12.45      114.0
15      Terrible Combination11.91      121.9
16      Small block Nova    12.08      110.9
17      Larry's 8-sec. Monza 8.83      155.7





      <ESC=EXIT> <F4=SELECT> <F5=COPY> <F6=SWAP> <F7=PRINT>
                 <F9=DELETE> <ENTER=START OVER>
          
          Press  <F4> again to signal you wish to load a vehicle,
          then enter the record number (which is #1) of the first
          example car, and press <ENTER>.


-----------------------------------------------------------------          
             COMPUTER ENGINE ANALYSIS RESULTS SCREEN

Vehicle: #1  EXAMPLE CAR (start)Date: 05-03-1994  18:37:41

MPH  Gear     Tire  RPM         Slip%
99.5 4.11     27.0  5605        10.0

Best possible ET, uncapped:     12.68  Using optimum Stall
				               would lower your estimated
Est60 foot ET:(  32.1 mph)      2.05   1/4 mile E.T. to: 13.58  sec.
Est1/8 mile ET:(  80.9 mph)     8.69
Est1/4 mile ET:(  99.6 mph)     14.03  Optimum stall:4067
		                           Optimum 1/4 mile Gear:  4.69
Biggest E.T. losses (in order):        or use tire height of:  23.6"

Stall    -0.44                         Optimum 1/8 mile Gear:  5.83
Traction -0.42                         or  use tire height of: 19.0"
Gear     -0.32
------------------              Gross Horsepower(aprox): 376.00
Total Losses: 1.18 seconds      Net Horsepower (exact):  279.03
                                
   All calculations based upon current Elevation of 100 feet.

    <F1=HELP> <F2=NEW VEHICLE> <F4=DATABASE> <ENTER=CONTINUE>
                      <F7=PRINT> <F10=QUIT>
---------------------------------------------------------------------          


          Now  the  fun  starts.  Looking at  the  "E.T.  Results
          Screen", we notice that this vehicle is only running in
          the low 14's at approximately 100 MPH:

               Est. 1/4 mile E.T.:  14.03 at 99.5 MPH

               NOTE: The  exact  E.T. displayed by  DRAGSTRIP
               PLUS changes slightly from time to time as new
               versions are released and improvements to  its
               computing logic are made.

          The  number  one  vehicle loss listed  is  "not  enough
          stall",  followed closely by "not enough traction"  and
          "not  enough  gear".  Based upon this observation,  our
          initial  reaction might well be to increase the  amount
          of   stall   and   thus   "improve"   the   combination
          significantly in this manner.

          But why mess up a perfectly good street car?  DRAGSTRIP
          PLUS  reports  that the optimum stall needed  for  this
          combination is roughly 4100, with roughly 4.56  as  the
          optimum  gear.   Why get rid of a 2500 stall  and  4.11
          gears, when there might be a better way to improve this
          combination, utilizing the existing stall and gear?

          It  turns  out  that  there is  a  far  better  way  to
          dramatically  increase the performance of this  vehicle
          than by changing the stall and gear.  Press <ENTER>  to
          continue  to  the  next screen, the "Engine  Statistics
          Screen".   Notice that this vehicle's  shift  point  is
          above 6400, while the engine's powerband is almost 2400
          RPM wide.


-----------------------------------------------------------------          
                    ENGINE STATISTICS SCREEN

Vehicle: #1  EXAMPLE CAR (start)    Date: 05-03-1994

Combination / Design Rating:         75.8   Optimum Carb CFM: 512 - 671
Engine-to-Vehicle Matchup Rating:    64.5   Opt Primary Header Len: 39.3"
Engine Overall Power Rating:         42.6

Computer Estimated Shift Point:      6451   Shift MPH in 1st gear:  46.1
Estimated Engine Powerband Width:    2384                2nd gear:  64.5
                                                         3rd gear: 113.5
Engine Size in CID :    355
Computer Predicted HP per CID:       1.02
Computer Est. of Lost Exhaust HP:    16.8

Nr. of Badly Mismatched Parts:         1

Highest Rated Engine Part(s):       
   (100 = Perfect) 
  Total Duration Rating:             115.4
  Header size Rating:                114.4

Lowest Rated Engine Part(s):

  Duration @.050" Rating:             88.1
  Port job Rating:                    67.4

     <F1=HELP> <F2=NEW VEHICLE> <F3=ADVICE> <ENTER=CONTINUE>
                      <F8=BACK> <F10=QUIT>
-----------------------------------------------------------------


          
          While  these  numbers aren't so bad for a  street  car,
          what  if they could be improved?  Instead of increasing
          the  amount of stall and gear, why not lower and  widen
          the engine's powerband if possible?



------------------------------------------------------------------
                   COMBINATION PART RATINGS SCREEN

Vehicle: #1  EXAMPLE CAR (start)     Date: 05-03-1994

RATING OF 100 = PERFECT:           Computer Suggestion(s):
---------------------------    ----------------------------
Total Duration     115.4       Advance CAM -or- add more gear
Header size        114.4
Head type          105.4       Camshaft profile needs less Total
Carburetor CFM     103.7       (advertised) Duration
Intake valve size  103.0
Exhaust valve size 101.9       Try increasing Cam lobe separation
Cam Overlap        101.4
Camshaft Profile   100.2       Consider upgrading to a Solid-lift CAM
Compression         98.3
Exhaust pipe size   97.4       Try smaller headers. (Press F1 for Help)
Valve lift          95.7
Intake Manifold     94.4       Increase fuel pump delivery!
Cam type            94.1
Fuel octane         90.3       Better head port job BADLY needed
Duration @.050"     88.1
Port job            67.4

       <F1=HELP>   <F4=DATABASE>   <F7=PRINT>   <ESC=EXIT>
                  <ENTER=CONTINUE>   <F10=QUIT>
------------------------------------------------------------------

          
          Now   press  <F3>  to  enter  the  "Combination  Advice
          Screen".  Based upon the suggestions displayed on  this
          screen,  we decide to spend $500 or so and upgrade  the
          engine by making the following changes:
 
                1.   Smaller headers (1 5/8" verses 1 3/4")

                2.   Better CAM (more valve lift for less  total
                     duration, wider lobe centers)

                3.   Advancing  the  new  CAM  four  degrees  at
                     installation

                4.   Mildly porting the heads

                5.   Better  tires  &  traction  (McCrearys  and
                     "Good"   traction   instead  of   Pro-Tracs  and
                     "Satisfactory" traction)

                6.   Cooling the engine completely before racing
                     (instead  of entering the staging lanes  with  
                     an already  warm  engine --see HELP in  this  
                     manual under this topic, "Engine Temperature")
          

-----------------------------------------------------------------
                       ENGINE DATA SUMMARY SCREEN

Vehicle: #1  EXAMPLE CAR (improved)     Date: 05-03-1994

1) Header Tube size:   1 5/8 E) Ex.Valve Size:   1.50
2) Exh. Pipe size:     2 1/2 F) Rocker Ratio:  1.5 : 1
3) Engine CID:355 Chevy      G) Carburetor: Holley
4) Transmission: Turbo 350   H) Carb. CFM:650
    1st Gear: 2.46           J) Air Induction:   Ram/Cowl Air
    2nd Gear: 1.76           K) Boost:   N/A
    3rd Gear: 1.00           L) InterCooler: N/A
    4th Gear: N/A            M) Manifold: Lo-rise single plane
    5th Gear: N/A            N) Ignition: Stock Electronic
5) Finish Line Gear:   3rd   P) Pistons:  Cast
6) Camshaft:  Hydraulic      Q) Compression: 8.5 : 1
7) Tot. Duration: 296        R) Head Type: Open-chamber iron
8) Dur. @ .050": 245         S) Port Job: Basic/Port Matched
9) Valve lift:.535"          T) Fuel: 93 octane Super Unleaded
A) Lobe Centers: 110         U) Fuel pump:Stock
B) Cam Overlap:  65          V) Engine Quality: Excellent(Most cars)
C) Cam Timing: 4 Advanced    W) Driver Skill: Good
D) In. Valve Size:           1.94

    <F1=HELP> <F2=NEW VEHICLE> <F4=DATABASE> <ENTER=CONTINUE>
                      <F8=BACK> <F10=QUIT>
------------------------------------------------------------------
          

          Normally, to make these changes you would need to press
          <ENTER>  until  you  come to the "Engine  Data  Summary
          Screen",  then  make the changes one at  a  time.   But
          there  is  no need to do so, as example car #2  in  the
          vehicle database already has these changes made to it.
          Return to the vehicle database by pressing <F4>.   Load
          example  vehicle #2 from the database, then notice  the
          results of our changes:

               Est. 1.4 mile ET:  13.19 at 102.1 MPH

          Wow!   What did we do specifically that resulted in  an
          E.T.  improvement like this?  Our changes substantially
          lowered the new combination's shift point to just  over
          5900 RPM, while improving the engine's already generous
          powerband  to  nearly  2600 RPM.  Also  the  Engine-to-
          Vehicle  Matchup  rating now stands  at  85,  verses  a
          miserable 64 rating before.

          In  addition,  this new combination  produces  18  more
          horsepower.   But  keep in mind that adding  horsepower
          was  not the main purpose of making the changes we that
          made.  Lowering and widening the engine's powerband was
          the  primary,  indeed  only, goal  of  the  combination
          changes we made!

          This  is  a  very important point.  Unlike a mechanical
          dyno,  DRAGSTRIP PLUS does not primarily seek to  boost
          your engine's horsepower output, but rather to get your
          entire  vehicle as a package to go faster,  in  a  less
          "radical" form if possible, EVEN IF THIS MEANS REDUCING
          YOUR ENGINE'S OVERALL HORSEPOWER OUTPUT!

          What if we want to go still faster?  Is there any thing
          else  we can do to make our 3400 lb. small block street
          car substantially faster still?

          Yes,  there  is. And since, fortunately  or  not,  many
          street cars have nitrous oxide capability, we decide we
          don't  wish  to be left behind. So let's  redesign  our
          combination with nitrous oxide in mind. Here's the  new
          changes:

                1.    Forged  flat top pistons (instead  of  cast
                dished pistons)

                2.    Compression ratio of 9.5 :  1,  instead  of
                8.5 : 1, as a result of the piston change

                3.   Hi-performance after market ignition system

                4.     Electric   fuel  pump,  125   gpm    (very
                important!)

                5.    Adding  octane booster or mixing in  racing
                fuel  in  with our Super Unleaded gas,  to  allow
                Nitrous use without having to sharply retard  the
                engine  (with nitrous, you may not hear  cylinder
                detonation in time to prevent damage)

                6.   A 150 (gross) horsepower Nitrous Oxide kit

                7.    "Satisfactory" traction instead  of  "Good"
                traction,  allowing  for  the  increased   engine
                torque  and tire spinnage due to the addition  of
                nitrous..

          These  changes have already been made for  us  in  your
          vehicle  database.  Load example vehicle  #3  from  the
          vehicle  database (by pressing <F4> again), and  notice
          the results of our work:

               Est. 1/4 mile ET:  12.32 at 108.7 MPH

          Notice that this combination's shift point has declined
          still  further  to under 5800 RPM, while  the  engine's
          powerband has widened to a whopping 2800 RPM!  However,
          while  this vehicle's E.T. performance is great, it  is
          still  not particularly outstanding compared  to  other
          state-of-the-art street machines running out there.  So
          what  can  we  do  to  improve this  combination  still
          further?

          At this point, we decide to spend another $1000 - $2600
          or  so  and  build  ourselves a top  class  (but  still
          relatively cheap) Pro-Street machine.  Here's  the  new
          changes:

                1.   Reduce  vehicle weight to 3100  lbs.,  down
                     from 3400

                2.   Increase transmission stall to 3200 RPM (up
                     from 2500)

                3.   Add  free-flowing  mufflers  and  3   inch
                     exhaust  (verses turbo type mufflers and  
                     2  1/2" exhaust before)

                4.   Add Slicks, improving traction to "Good"

                5.   Change to a Solid-lift Camshaft (more valve
                     lift for the same camshaft total duration)

                6.   Camshaft installed straight up  instead  of
                     advanced

                7.   Closed-chamber production heads

                8.   2.02" intake and 1.60" exhaust valves

                9.   "Thorough" port job on the new heads,  plus
                     intake manifold and gasket port matching

                10.  10:1 Compression (result of head change)

                11.  100-105 octane racing fuel

                12.  Change  to  a  medium-rise  single   plane
                     manifold (such as Victor Jr.)

                13.  Larger carburetor (850 cfm instead of 650)

                14.  Add a hood scoop

                15.  Increase to 200 horsepower of nitrous oxide
                     (up from 150 hp)

                16.  "Experienced"  driver  (instead  of  "Good"
                     driver)

          Once  again, these changes have already been  made  for
          us.  Load example vehicle #4 from the vehicle database.
          Notice the results of our new design:

               Est. 1/4 mile ET:  10.97 at 122.5 MPH

          Keep in mind that this combination, like the others, is
          an  actual vehicle currently running today in  Houston,
          Texas,  consistently running this E.T. and MPH.  Notice
          that while the engine's shift point has risen to nearly
          6600  RPM,  it still more or less what it was  when  we
          started in the beginning with the first combination!
          While  this is indeed Pro Street performance in a  very
          buildable and driveable package, keep in mind that this
          combination  by  no means constitutes world-class  Pro-
          Street performance.

          E.T.'s  in  this range and faster can be attained  with
          the  same 355 small block engine, with cheap production
          steel  heads,  on  9" street tires instead  of  slicks,
          relatively quiet turbo-type mufflers with only  2  1/2"
          exhaust,  plain  Super  Unleaded  gas  with  no  octane
          booster  of any kind, a shift point below 6300 RPM,  in
          roughly the same weight car, with 4.11 gears and only a
          3000   RPM  stall.   Revolutionary  Concepts  has   had
          considerable  personal experience  with  such  ultimate
          street machines!

          Why  is  such  an  engine combination not  included  in
          DRAGSTRIP    PLUS'   database?    Such   designs    are
          proprietary;  so  you will have to design  combinations
          like  this on your own.  (This is our way of issuing  a
          challenge to our more experienced users!)
          Once   you  master  the  techniques  revealed  in  this
          section, with practice and experimentation you will  be
          able   to   develop  combinations  far  exceeding   the
          abilities of the casual DRAGSTRIP PLUS user.

                     TIP:  If  you  wish to  experiment  and
                     make    changes   to   any    of    the
                     combinations in your vehicle  database,
                     first  use the database's COPY function
                     to  make  a copy of the original,  then
                     make  your changes to the copy under  a
                     new name.

          Example:    Enter  the database, then  press  <F5>
                and  enter the record number of the  vehicle
                you   are  interested  in  modifying.   When
                asked,  give  the  new vehicle  a  different
                (unique) name.  That's all there is  to  it!
                You  can  now  change any  thing  you  like,
                without affecting the original combination.

          Just   remember   to   save  your   changes   and   new
          combination(s) by pressing <F10> to exit DRAGSTRIP PLUS
          once  you're  finished, rather than  just  leaving  the
          program running or turning the computer off.



DragStrip Plus Hot Keys
          Press <F1> to get on-line HELP at any time.
          Press <ENTER> to continue on to the next screen.
          Press <F2> to start a new vehicle.
          Press <F4> to access the Vehicle Database.
          Press <F7> at the E.T. Results Screen to print the
          current combination in its entirety.
          Press <F10> to save the Vehicle Database and exit to
          DRAGSTRIP PLUS' main menu.
          Press <SHIFT><F1> at the E.T. Results Screen to see a
          list of shortcut HOT KEYS around DRAGSTRIP PLUS.
          
          Use the following shortcut HOT KEYS as a short cut to
          ease your way around DRAGSTRIP PLUS:
               Press <CTRL><A> to jump to Advice screen
               Press <CTRL><D> to jump to Vehicle Database
               Press <CTRL><R> to jump to E.T. Results screen
               Press <CTRL><S> to jump to Engine Statistics screen
               Press <CTRL><V> to jump to Vehicle Data screen
               Press <CTRL><E> to jump to Engine Data screen












Chapter Three:  Using An Analysis Mode







Choosing The Correct Analysis Mode

          Now  that you have familiarized yourself with DRAGSTRIP
          PLUS  by working with some its sample combinations (see
          previous  section),  it's time to  let  DRAGSTRIP  PLUS
          analyze your own combination.

          If  you  do  not  already have DRAGSTRIP PLUS  running,
          start  the  program (see prior sections in this  manual
          for  help if necessary), and enter your password.   You
          will then be at the "Mode Choice Selection" screen.

          If  you  already have DRAGSTRIP PLUS loaded and do  not
          see  "Mode Choice Selection" at the top of your screen,
          press  <F10>  to exit to the main menu,  then  re-enter
          your  password.  You will then be at the  "Mode  Choice
          Selection" screen.  (NOTE: you can press <F2> to take a
          quick  shortcut to the "Mode Choice Select"  screen  if
          the words "F2=NEW VEHICLE" appear at the bottom of your
          screen).

          Before  DRAGSTRIP  PLUS  can  begin  to  analyze   your
          combination, you need to decide which analysis mode you
          wish  DRAGSTRIP PLUS to use.  The three modes  are  the
          "Quick   Compute",  "Detailed  Analysis",   and   "Dyno
          Approach" combination analysis modes.

          Use the following descriptions of each mode to make the
          correct choice, based upon what you do (or don't!) know
          about  your  combination  and  what  you  expect   from
          DRAGSTRIP PLUS:

Quick Compute Mode

          To use this mode, you must know your vehicle's accurate
          finish-line MPH or RPM from track experience.  In  this
          mode, DRAGSTRIP PLUS will only calculate your vehicle's
          E.T.,  optimum  gear ratio, optimum  stall  point,  and
          horsepower.  You will not receive an engine analysis.
          The  advantages of this mode are its speed due  to  the
          very  minimal amount of data you must supply,  and  its
          accuracy.

          At  any  time you can change a "Quick Compute" analysis
          into  a  "Detailed Analysis" by selecting the "Computer
          Engine  Analysis" option at the "VEHICLE DATA  SUMMARY"
          screen  following your vehicle's E.T.  results display.
          This  technique  is  explained  in  greater  detail  in
          Chapter Four further on in this manual..
          
          
------------------------------------------------------------------

 SELECT YOUR CHOICE OF PROGRAM ANALYSIS MODES:


 1) `Quick Compute' You supply only parts related to the
                 vehicle plus its finish-line MPH or RPM, and 
                 DragStrip Plus will compute its E.T.  Quick but 
                 highly accurate!

 2) `Detailed Analysis'  You supply all engine and vehicle parts, and
                 DragStrip Plus will compute everything: the
                 vehicle's finish-line MPH, RPM, and E.T., plus
                 provide a comprehensive engine analysis.

 3) `Dyno Approach' You supply the vehicle's gross or net
                 horsepower, and DragStrip Plus will compute its E.T. 
                 and MPH.



F1=HELP   F3=SOUND<ON>   F4=DATABASE    F8=ET SCREEN      F10=END      
------------------------------------------------------------------


Detailed Analysis Mode
          Most  users of DRAGSTRIP PLUS use the Detailed Analysis
          Mode mode almost exclusively.

          To  use  the  Detailed Analysis Mode, you must  have  a
          detailed  knowledge of your combination, including  all
          major engine and vehicle parts.

          This  mode's main advantage is that DRAGSTRIP PLUS will
          compute    everything   related   to   the    vehicle's
          performance:  its  finish-line  MPH,  RPM,  E.T.,   and
          horsepower,  plus provide a comprehensive  vehicle  and
          engine analysis.

          You  can also, if you so wish, change at any time  from
          this  mode to the much simpler "Quick Compute" analysis
          mode  by  selecting the "Ignore Engine Data" option  at
          the   "Vehicle  Data  Summary"  screen  following  your
          vehicle's E.T. and engine analysis displays.

Dyno Approach Mode
          In  this  mode  you supply the vehicle's gross  or  net
          horsepower,  and DRAGSTRIP PLUS will compute  its  E.T.
          and finish-line MPH based upon the data you supply.
          The  advantages of this mode are its speed due  to  the
          minimal  amount  of  data you  must  provide,  and  its
          accuracy (if the horsepower figure you provide  is  net
          horsepower).

          DRAGSTRIP PLUS will NOT analyze your engine combination
          in  this mode.  However, at any time you can switch  to
          the "Detailed Analysis" mode by selecting the "Computer
          Engine  Analysis" option at the "VEHICLE DATA  SUMMARY"
          screen following your E.T.  results display.
          This  mode  is documented in greater detail in  Chapter
          Ten.
          












Chapter Four:  Using Quick Analysis







The Quick Compute Mode

          Your  vehicle's  analysis in the "Quick  Compute"  mode
          starts  with the  "RPM/MPH CALCULATOR" calculator.   To
          use  this  simple calculator, you must accurately  know
          either:

               1.   Your vehicle's 1/4 mile finish-line MPH

                         -- or --

               2.   Your vehicle's 1/4 mile finish-line RPM.

          If  you  do not know your vehicle's finish-line MPH  or
          RPM, press <F8> to return to the opening "Analysis Mode
          Choice"  screen,  then select the  "Detailed  Analysis"
          mode to compute your vehicle.

          Basically,  your aim here is to use this calculator  to
          balance     your     vehicle's    MPH,     RPM,     and
          transmission/converter   slippage,   until   you    are
          satisfied with the results. Then press <F2> to continue
          with your vehicle's analysis.

          The MPH/RPM Calculator screen looks like this:

               MPH  GEAR Tire RPM  %Slip
                ... ....     ..   ....  10

          These categories are defined as follows:

               MPH  -Your vehicle's average MPH at  the  1/4
               mile finish-line, example "120"

               GEAR -Your gear ratio, such as 4.11 (enter as
               "411")

               Tire  -Tire Diameter, or tire height, example
               "28"

               RPM  -Finish line RPM at full throttle,  such
               as "6500"

               Slip-Transmission/converter  slippage,   pre-
               assumed  to  be 10%.  If  you  have     a
               manual  transmission,  enter  "00"   (for 0%).

          To  use  the calculator, you need enter only any  three
          out of the first four fields, then press <ENTER> to see
          the result.

          To skip any ONE field out of the first four categories,
          press   the  <SPACE>  bar.   Notice  the  tone  change,
          signaling that you have jumped over this field  to  the
          following one (although no cursor is visible).
          Here's a few examples of how this works:

               EXAMPLE #1:     Suppose  you have  a  vehicle
                         that runs 124 MPH in the quarter at
                         the  track, has 4.11 gears, and  28
                         inch  tall tires --but you are  not
                         sure  what its finish-line RPM  is.
                         In  this situation, you would enter
                         this  information exactly as  shown
                         in quotes below:

                              "12441128" [press <ENTER>]

               Notice  that  you must input the  data  as  a
               continuous string.  The computer will  neatly
               space  it out for you.  Also notice that  you
               do  not need to enter the period (<.>) in the
               gear   ratio;   the  computer   automatically
               assumes this, for faster data entry.

               EXAMPLE #2:     Suppose  that you  know  your
                         MPH,  Gear, and RPM, but  not  your
                         tire  height. In this example,  you
                         would  enter the following:

                         "120411" [press <SPACE> ] "6500" [press <ENTER>]

               EXAMPLE #3:    Suppose that you know your car
                         has  28  inch tall tires  and  4.11
                         gears, and you're fairly sure  your
                         vehicle's finish-line RPM is  6500,
                         but you don't know its quarter mile
                         MPH. On top of that, your car has a
                         nearly stock converter AND a tight,
                         newly  built, transmission, so  you
                         are sure your transmission slippage
                         will be less than 10%. You estimate
                         it to be 8%.

                         The data string for this car would be:

                         [press <SPACE>] "4112865008" [press <ENTER>]

          NOTE:      If you make a mistake entering a number, use
               the backspace key, or else press the <ESC> key  to
               start over from the beginning.

               IMPORTANT:  Press  <F2>   once  done,  to
                        begin  computing  the  vehicle's
                        E.T. (when this option is valid,
                        it will be lit up in green).

               Press <F3>  to toggle sound ON / OFF

               Press <F4>  at any time to access the program
               vehicle database.

               Press  <F8>   to return to the Analysis  Mode
               Choice screen

               Press  <F10> at any time to quit the  program
               and  exit back to the DOS prompt. The vehicle
               database  will  be  saved  (if  it  has  been
               modified) before giving you a final choice of
               exiting.

          NOTE:      As  soon  as you press <F2>, DRAGSTRIP  PLUS
               will  begin  asking  you a  series  of  questions,
               beginning with Driver's Weight.












Chapter Five:  Entering Your Combination







Analysis Mode
          If you are using the Dyno Approach Mode, DRAGSTRIP PLUS
          will  begin asking a series of questions, starting with
          Engine Horsepower.  Since relatively few DRAGSTRIP PLUS
          users  use  this mode, for further Dyno  Approach  Mode
          help, please refer to Chapter Ten, "Using Dyno Mode".

          If you are using the Quick Compute or Detailed Analysis
          Mode,  DRAGSTRIP  PLUS will begin asking  a  series  of
          questions,  starting  with  Driver's  Weight..    These
          questions  are  documented here in the  same  order  as
          asked by the program.

Driver's Weight
          Input your weight only.  Your vehicle's weight will  be
          inputted  separately.  Separating the  driver's  weight
          from  the  vehicle's  is useful in  certain  situations
          where  there  are  substantial  differences  in  weight
          between two drivers of the same vehicle.

          In  general,  the  less the vehicle  weighs,  the  more
          noticeable the effect of changing drivers will be.

Vehicle's Weight
          Input  the  weight of the vehicle only.  The weight  of
          the vehicle's driver is entered separately.  Separating
          the  vehicle's  weight  from the  driver's  allows  the
          program to more accurately calculate the engine's  true
          net horsepower.
          See Appendix C for commonly used vehicle weights.

Weight Change
          You  can choose between having the program re-calculate
          your  vehicle's net horsepower, or estimating the  MPH,
          RPM,  traction, and E.T. changes the weight change will
          have upon the vehicle.

Nitrous Oxide Use
          The program is not asking if a nitrous oxide system  is
          on  your  vehicle, but whether or not a nitrous system,
          if any, was used to make this particular pass.

Amount Of Nitrous Oxide Horsepower
          Enter  the estimated horsepower output of your  Nitrous
          Oxide  kit.   The program will assume that the  Nitrous
          system was used in the optimum manner, i.e., throughout
          the  quarter  mile, including right  off  the  starting
          line.

          If  you  used the nitrous system for only half a  pass,
          the program's E.T. estimates may be off by as much as a
          second.   This  is  particularly true  when  a  nitrous
          system is used during only the last half of the quarter
          mile.

          To  compensate  for this effect, it  is  acceptable  to
          change  the  amount of horsepower you  enter  into  the
          program.   For  instance, if your  vehicle  has  a  250
          horsepower nitrous system, but was only used during the
          last  half of the track, input 100 horse-power  instead
          of the normal 250.

          If  the  same 250 horsepower system is only used during
          the   first  half  of  the  quarter  mile,  input   200
          horsepower  instead  of  250.  The  reason  for   these
          differing horsepower input recommendations is based  on
          the  fact that nitrous has a much greater effect  on  a
          vehicle's performance when it is used during the  first
          half  of the quarter mile, verses the same system  used
          during only the last half.

          If  you  are  using  the  Quick  Compute  Mode,  it  is
          important  to  realize that if you  are  entering  your
          vehicle for the first time, the amount of nitrous oxide
          you  select will have little effect upon your vehicle's
          estimated E.T.

          This  is  because the program assumes that the MPH  and
          RPM  at  the  end  of  the  quarter  mile,  as  entered
          previously,  was achieved as a result  of  the  nitrous
          horsepower level you are now about to input.

          Of  course  DRAGSTRIP  PLUS can calculate  what  effect
          various  amounts of nitrous oxide horsepower will  have
          upon any given vehicle. These kind of changes should be
          made  after  the  program has already  calculated  your
          vehicle's  base E.T., at the data change  screen.  This
          will   force  MPH,  RPM,  gear,  stall,  and   traction
          recalculations  that will result  in  a  new  estimated
          likely E.T.

Stall Point
          IF  YOU HAVE AN AUTOMATIC TRANSMISSION, the response is
          easy:  Your stall point is the highest RPM your  engine
          can hold in low gear with the brakes held as tightly as
          possible (or transbrake set) without your drive  wheels
          beginning  to  spin,  or the vehicle  creeping  forward
          against the brakes.

          However, in certain situations, you will need to adjust
          this  value  upwards by a couple hundred or  more  RPM,
          such as if your vehicle is equipped with a poor set  of
          tires  relative to the strength of the  engine,  or  if
          your  vehicle  has  a  poor set  of  brakes.  In  these
          situations the drive wheels will begin to spin  or  the
          vehicle  creep  forwards well below  your  transmission
          converter's true stall point, resulting in the need  to
          adjust the observed stall RPM upwards by 10% or so.

          IF YOU HAVE A MANUAL TRANSMISSION, only a great deal of
          racing   experience  with  both  manual  and  automatic
          transmissions  can  allow one to  properly  supply  the
          correct  stall point. The true stall point the  program
          is  looking  for is not the RPM the clutch is  `dumped'
          at, but is nearer the low RPM the engine is pulled down
          to as the clutch grabs and the vehicle gets underway.

          The  best approach for coming up with the correct stall
          point  for a manual transmission is to let the  program
          tell you what it is!  Enter your best guess, then later
          come  back after the E.T. results screen and fudge  the
          stall point one way or another by 15% or so, until  the
          vehicle's E.T. looks right.

          If  you  use this approach, be sure to watch the amount
          of  stall loss on the E.T. Results Screen.  You can use
          this  information to determine which way (and how much)
          to move your stall point guess.

Exhaust System
          Select your vehicle exhaust system according to the
          following definitions:

          Uncapped Exhaust -refers to vehicles running open 
                    headers.

          This does NOT mean open exhaust manifolds, if this is
          the case, you should input "Free Flowing" or "Average"
          in the menu selection instead of "Uncapped Exhaust".

          Free Flowing    -refers  to brands of exhaust  mufflers
                    that  are particularly free flowing (such  as
                    Flowmaster and Dynomax) AND matching  exhaust
                    system of headers and large (3'' diameter  or
                    larger)  exhaust  pipes.  If  you  have  Free
                    Flowing  mufflers but only  2  1/2''  exhaust
                    pipes  all  the way through or no headers  on
                    the  engine,  input  "Average"  in  the  menu
                    selection instead of "Free Flowing".

          Average   -means  an  exhaust  system  with  relatively
                    small-tube   headers,   dual   exhaust,   and
                    moderate flow mufflers such as Sonic  Turbos,
                    Hookers, etc.

          Dual      -means  an  exhaust system that  consists  of
                    exhaust   manifolds,   two   exhaust   pipes,
                    mufflers, and no headers.

          Single    -refers   to  an  exhaust  system   that   is
                    comprised  of  exhaust  manifolds,  a  single
                    exhaust  pipe,  a  muffler  and/or  catalytic
                    converter, and no headers.

Tire Height
          Enter  the diameter, or height of your vehicle's  drive
          wheels in inches. DRAGSTRIP PLUS does not automatically
          add  an allowance for tire growth, so you must manually
          allow for this yourself.

          The  amount tires "grow" varies with the tire type  and
          other  factors,  such as the height and  width  of  the
          tire, the speed of the vehicle, tire air pressure,  and
          temperature of the track and tires. For example, a hard
          radial  tire on a 90 mph in-the-quarter sports car  may
          grow  less than 1/2 inch, while a soft slick on  a  290
          mph Top Fuel Dragster may grow 4 inches or more.
          Enter a tire diameter such as "28 1/2" as "28.5".

Tire Selection
          The  type of tires on your vehicle has a lot to do with
          how well it "hooks up" and accelerates off the starting
          line.   Select  the tire category that  best  fits  the
          brand  and  type  of  tires you have  on  your  vehicle
          according to the following definitions:

          "Slicks"  -are the wide, bald, sticky racing tires
                    used  almost exclusively by  the  faster
                    drag cars. Slicks are illegal for use on
                    the  street due  to the fact they  float
                    in the rain, and are generally used only
                    at  the  track,  or by  the  faster  Pro
                    Street machines.

          "McCrearys"     -if  you have any similar type  of
                    super   traction  soft-compound   street
                    racing  tires such as Mickey Thompson's,
                    etc.   These kind of tires usually  wear
                    out  in  just  2,000 miles  or  less  of
                    street use.

          "Pro-Tracs"    -generally cost less than the soft-
                    compound   class  of   tires   such   As
                    McCrearys  above,  and  usually  last  a
                    whole lot longer as well.  This type  of
                    tire usually wears out in roughly 10,000
                    miles  of street use, and are the  tires
                    of  choice for most 13-and-14 second hot
                    rods.

          "Radials" -generally  last 25,000 miles  or  more.
                    They  are the tire of choice for  almost
                    all  production sport cars, and most 15-
                    and-16 second hot rods.

Traction
          The computer uses this information, in combination with
          other factors such as your vehicle's type of tires  and
          its  net horsepower and weight, to decide just how much
          E.T.  your particular vehicle will lose due to traction
          difficulties. So think of your input as  only  a  rough
          guide to the computer.

          If  you are using DRAGSTRIP PLUS' "Quick Compute" mode,
          select  the traction category that best describes  your
          vehicle's  actual track performance results during  the
          particular  pass  you  are  entering  (and   NOT   your
          vehicle's normal or best traction conditions!).

          If you are using DRAGSTRIP PLUS' "Detailed Analysis" or
          "Dyno  Approach"  modes, select the  traction  category
          that   best  describes  your  vehicle's  BETTER   track
          performance results (if known). If your vehicle  is  in
          the  design or construction stage and has not yet  made
          its  first pass, you will need to supply DRAGSTRIP PLUS
          with an advance projection of your vehicle's traction.

          You  can arrive at this advance projection by comparing
          your  combination  with  the  current  performances  of
          similarly  built vehicles, or if no such  guides  exist
          for  your combination or are unavailable in your  area,
          by  making  a  careful estimation  based  upon  logical
          consideration of all the facts. If you make  a  serious
          mistake,  DRAGSTRIP PLUS will warn you via the  "Advice
          Screen".

          Use  the  following information as a guide as necessary
          in arriving at a projection of your vehicle's traction:
               
               1.     ALL-OUT  RACE CARS AND "TRAILER  CARS"
                normally use slicks. These vehicles and  can
                usually   expect   "Excellent"   or   "Good"
                traction;   if   not,  such  vehicles   will
                normally  be  altered  until  they  do   get
                excellent or great traction.

               2.      PRO-STREET   MACHINES  often   employ
                either slicks or soft compound street  tires
                such   as  McCrearys,  depending  upon   the
                occasion  and  driver.   Such  machines,  if
                running  on  engine power  alone,  can  most
                often  expect  "Excellent"  traction  if  on  
                slicks,  or "Excellent"  to  "Good" traction  
                if using soft compound street tires.

                On  nitrous oxide, these machines can expect
                "Excellent"  to "Satisfactory"  traction  if
                using  slicks, and anywhere from  "Good"  to
                "Marginal"  traction if using soft  compound
                street  tires.  "Satisfactory"  traction  is
                the  average for most well-built  11  second
                or   faster  street  machines  running   200
                horsepower  or  more  of  nitrous  oxide  on
                street tires.

               3.     SERIOUS STREET CARS in the  13  to  15
                second   range  can  expect  anywhere   from
                "Excellent" traction if using soft  compound
                street   tires,   "Good"  to  "Satisfactory"
                traction  if using Pro-Trac type tires,  and
                "Satisfactory" to "Poor" traction  if  using
                hard radial tires and/or nitrous oxide.

               4.     NEAR STOCK SPORTS CARS AND STREET CARS
                frequently  use  radial tires,  but  in  the
                hands  of a capable driver, can still expect
                "Excellent" to "Satisfactory" traction,  due
                to    these    machine's   relatively    low
                horsepower  outputs, high rear end  gearing,
                and relatively heavy vehicle weights.


DragStrip Plus' Traction Definitions

          "Excellent"    traction means just that practically  no
                   perceivable  tire  spin  on  launch  AT   FULL
                   THROTTLE  (and "spraying right out the  gates"
                   on  Nitrous Oxide, if this happens to be a NOS
                   pass that you are entering).

          "Good"   traction  means  either  your  tires   quickly
                   "hook  up" off the line at full throttle  (and
                   Nitrous,  if this is a NOS pass), or  that  in
                   order  to  prevent the tires from starting  to
                   spin,  you  must initially leave the  line  at
                   part  throttle,  then can  immediately  "floor
                   it"  (or  begin to "spray") with  no  traction
                   loss at all at that point right off the line.

          "Satisfactory" means  that your vehicle  is  capable of
                   spinning  all  the  way  down  the   60   feet
                   launching  pad,  except  that  in   order   to
                   prevent   this  from  occurring  as   far   as
                   possible,  you  have to run at  half  throttle
                   (and  delay use of Nitrous Oxide if this is  a
                   Nitrous  pass)  until near the  top  of  first
                   gear or the beginning of second gear.

          "Marginal"     means  the vehicle will "break out"  and
                   lose  traction at virtually any  point  during
                   the  first portion of the track, if the driver
                   were to floor it all the way (or "squeeze  it"
                   with  Nitrous Oxide, if this is a Nitrous pass
                   you are entered).

          "Poor"   traction  means that despite the best  efforts
                   of  the  driver to control it, the vehicle  is
                   liable  to  spin  at virtually  any  speed  or
                   position  on  the  track. In first  gear  (and
                   often  second),  the  vehicle  is  capable  of
                   smoking the tires, even at half throttle.   An
                   good  example  of  "Poor"  traction  would  be
                   would  be a 12 or 11-second car attempting  to
                   use hard radial tires!

Name Your Vehicle
          If  you  are  using  the Detailed Analysis  Mode,  this
          section and the following two sections do not apply  to
          you.  You  can  skip the next three sections  and  jump
          directly to "Header Tubes" up ahead.

          If  you  are  using  the  Quick Compute  Mode  or  Dyno
          Approach Mode, at this point DRAGSTRIP PLUS is going to
          ask you to give your vehicle a name.

          If you don't give your combination some kind of a name
          at this point, DRAGSTRIP PLUS won't save it when you
          exit the program or even allow you to return to it if
          you load a different vehicle from the vehicle database.

          Besides, any printouts you make will look better if you
          give your vehicle a name.

                Here are a few typical examples:
                   "Rick's '69 street Camaro"
                   "Denver SideKick 355 Nova"
                     "454 Blue Nova Terror"
                     "Jeff's Dodge Dart 351"
                   "355 AMC Gremlin NOS Bomb"



The E.T. Results Screen

          At  this point, if you are using the Quick Compute Mode
          and  Dyno  Approach Modes, DRAGSTRIP PLUS will  compute
          and  display your vehicle's E.T., MPH, RPM, Horsepower,
          Optimum Gear and Stall, and Biggest E.T. losses,  among
          other things.

          If DRAGSTRIP PLUS finds something critically wrong with
          your  combination, such as excessive gear, you will  be
          given  an opportunity to change the offending entry  or
          entries.


-----------------------------------------------------------------
              COMPUTER ENGINE ANALYSIS RESULTS SCREEN

Vehicle: #16  Small block Nova Date: 05-03-1994  16:07:19  3.00

MPH     Gear   Tire   RPM       Slip%
110.9   4.88   29.0   6903      10.0

Best possible ET, uncapped:     11.64    Using optimum Gear would
                                         lower your estimated 
Est 60 foot ET:   (35.9 mph)  1.75       1/4 mile E.T. to: 11.91 sec.
Est 1/8 mile ET:  (90.5 mph)  7.59
Est 1/4 mile ET: (110.0 mph) 12.08       Optimum stall: 4518
                                         Optimum 1/4 mile Gear:   5.17
Biggest E.T. losses (in order):          or  use tire height of:  27.3"

Gear     -0.17                           Optimum 1/8 mile Gear:   6.34
Stall    -0.15                           or  use tire height of:  22.3"
Traction -0.13
------------------                       Gross Horsepower(aprox): 525.00
Total Losses: 0.45 seconds               Net Horsepower (exact):  389.23

   All  calculations based upon current Elevation of 34 feet.

    <F1=HELP> <F2=NEW VEHICLE> <F4=DATABASE> <ENTER=CONTINUE>
                      <F7=PRINT> <F10=QUIT>
               
Press <ENTER> to continue on to the next screen when ready.

-----------------------------------------------------------------



Making Changes To Your Vehicle Combination
          If  you  are  using  the Quick Compute  Mode  and  Dyno
          Approach Modes, DRAGSTRIP PLUS will display a  list  of
          your  vehicle's  component parts and  other  statistics
          ("Change Vehicle Data" screen).
          

-----------------------------------------------------------------

                    VEHICLE DATA SUMMARY SCREEN

Vehicle: #16  Small block Nova   Date: 05-03-1994

MPH    Gear  Tire  RPM   Slip%
110.9  4.88  29.0  6903  10.0

1) Finish-line MPH: 110.9      G) Body Style: Sedan
2) Gear:      4.88             H) Frontal Area: 26
3) Tire Height: 29             J) Elevation: 34
4) Finish-line RPM: 6903       K) Air Temperature:  84
5) Converter Slip%: 10         L) Air Pressure: 29.90
6) E.T.:      12.08            M) Relative Humidity:  83
7) Driver Weight: 145          N) Engine Temperature:  Warm
8) Vehicle Weight: 3400        P) Change Vehicle Name
9) Net HP:    389.23           Q) Vehicle DataBase
A) Nitrous HP: None            R) Ignore engine data (if any)
B) Exhaust System: Open        S) Computer engine analysis
C) Shift Point: 7318
D) Stall:  4000
E) Tires:  Slicks
F) Traction: Good

  <F1=HELP>  <F2=NEW VEHICLE>  <F4=DATABASE>  <ENTER=CONTINUE>
                      <F8=BACK>  <F10=QUIT>


-----------------------------------------------------------------


          To  change  any  vehicle statistic, merely  select  its
          highlighted character.  DRAGSTRIP PLUS will  allow  you
          to  change  the  value of the item you  selected,  then
          recalculate  your vehicle's E.T.  and  re-evaluate  its
          advice in the light of the change you made.

          At  any  time,  if you decide to go further  with  your
          combination building and want DRAGSTRIP PLUS to analyze
          your  engine  as  well,  select  the  "Computer  Engine
          Analysis" option.

          This  will convert your Quick Compute or Dyno  Approach
          Mode  analysis  into  the  far more  powerful  Detailed
          Analysis  Mode.   DRAGSTRIP PLUS will  begin  asking  a
          lengthy  series  of  engine related questions  (consult
          this manual for Help).

          If  you  do  not  know  the proper responses  to  these
          questions, or change your mind about getting a Detailed
          Analysis, press (and hold down) the <F8> at any time to
          successively back up and return to this screen.

          Press <ENTER> to return to E.T. Results screen.


Header Tubes
          If  you  are  using  the  Quick Compute  Mode  or  Dyno
          Approach  Mode, the following sections do not apply  to
          you.
 
          If  you are using the Detailed Analysis Mode, DRAGSTRIP
          PLUS  will ask you if your engine has headers.   (NOTE:
          In   the   Detailed   Analysis  Mode,   this   question
          immediately follows "Traction").  DRAGSTRIP  PLUS  will
          then   continue   asking  you  other   engine   related
          questions.
 
         If your engine combination has headers, reply yes.  You
          will next be asked to enter the size of the headers.

Header Tube Size
          Header  tube size often has a dramatic effect  upon  an
          engine  combination's horsepower output, RPM powerband,
          vehicle driveability, and fuel economy.

          Header  tubes help boost an engine's horsepower  output
          in  two ways:  by relieving exhaust back pressure,  and
          by  creating  a  powerful "siphon" effect  which  draws
          additional  air-fuel mixture into the cylinders  during
          the valve overlap period of the camshaft.

          Generally, the larger your header tubes are, the  lower
          the  exhaust back pressure will be.  However, as header
          tube  size  increases,  the cylinder  siphoning  effect
          decreases  at the lower RPM ranges.  The net effect  of
          these tradeoffs are that as header tube size increases,
          the   powerband  range  of  the  engine  increases  and
          typically narrows.

          Thus, many street cars actually run faster using a  set
          of  headers that is one size smaller than that required
          for   peak  horsepower  output.   Despite  the  reduced
          horsepower,  the  lower  engine  powerband  matches  up
          better with the less-than-optimum gears and stalls used
          in  these vehicles.  TYPICALLY, SUCH HEADERS DRAW A 88-
          94 RATING BY DRAGSTRIP PLUS, WHICH SHOULD BE CONSIDERED
          NORMAL  FOR  MOST STREET MACHINES.  All-out  race  cars
          generally  base their combinations around header  tubes
          which  draw  a  95-105  rating by  DRAGSTRIP  PLUS.   A
          popular header tube diameter for street use is  1  5/8"
          for  small block engines, and 1 3/4" or 1 7/8" for  big
          blocks.

Exhaust Tube Size
          The  larger  your  exhaust pipes are, the  better  your
          engine can breathe.  Common exhaust pipe diameters  for
          street use are 2 1/2" (typically used with "turbo" type
          mufflers) and 3" (typically used with free flowing type
          mufflers).

Engine Size
          Enter   the   size  of  your  engine  in   cubic   inch
          displacement  (CID).   Be sure  to  include  any  extra
          displacement created by overboring the engine.

          As  engine size increases, the RPM range of the  engine
          proportionately   decreases,  for  any   given   engine
          combination.  Therefore, as engine size increases, your
          combination  must  be  scaled upwards  to  reflect  the
          increase  in  aspiration required to  fill  the  larger
          engine to the same level of volumetric efficiency.

          Overboring the engine by .030" typically adds five  (5)
          CID if the engine is a small block, or eight (8) CID if
          a big block engine.  Double these figures if the engine
          is overbored by .060".

          NOTE: If your engine's size is measured in metric,
                multiply its size in cubic liters by 61.

          Example:  A  Camaro  equipped with a  "5.0"  engine  is
                    actually 305 CID (5.0 X 61 = 305).
         
          Popular  engine  sizes are 302 and 350  CID  for  small
          block  engines,  and  427 and 454  CID  for  big  block
          engines.

Number Of Engine Cylinders
          Press  <ENTER> to accept the default number  of  engine
          cylinders  already displayed, or enter a new  value  if
          applicable.
          
          DRAGSTRIP PLUS uses this information during its process
          of  calculating an engine's optimum fuel injector  size
          (if the engine is fuel injected).

Engine Manufacturer
          Select  the  engine manufacturer that made your  engine
          block.

Engine Type
          Select  the  engine category that best  describes  your
          engine.

          IMPORTANT:      If you have a Ford engine equipped
                    with  Cleveland heads, select  the  "Big
                    Block" category.

Transmission Selection
          Select  the  transmission  that  best  describes   your
          vehicle.    A  common  transmission  for  Chevy   based
          vehicles for street use is the Turbo 350.

          If   your   transmission  is  made   by   a   different
          manufacturer,  select  the Chevy transmission  category
          that comes closest to the performance and endurance  of
          your transmission.

Number Of Transmission Gears
          You  are  being asked to supply the number of gears  in
          the  vehicle's transmission.  Press <ENTER>  to  accept
          the  default answer already displayed, or enter the new
          value of your choice.

Transmission Gear Ratios
          Like  your  vehicle's rear end, the  transmission  also
          contains gears that have specific ratios that vary from
          transmission to transmission.

          Transmission  gear  ratios work like  this:   In  first
          gear, if your vehicle's driveshaft were to rotate     3
          and  1/4  times for every once the engine turned,  your
          transmission's first gear ratio would be  described  as
          being "3.25 : 1".

          A  less cumbersome way to represent this ratio would be
          "325",  and  that is what DRAGSTRIP PLUS is  expecting.
          Press  <ENTER>  to  accept the  default  value  already
          displayed, or enter a new value of your choice.
          At the current time, DRAGSTRIP PLUS makes only indirect
          use  of  this  information, and is mainly included  for
          future use.

Finish Line Gear
          You  are being asked to input the transmission gear  in
          which your vehicle crosses the finish line.

          Since most race cars finish the quarter mile in high or
          final  (1:1)  gear, this is the default answer.   Press
          <ENTER>  to  accept the default, or input  a  different
          finish line gear if applicable.

          NOTE:   If  DRAGSTRIP PLUS detects that your  vehicle's
          finish  line RPM will be too high or low in the  finish
          line  transmission  gear that you  selected,  DRAGSTRIP
          PLUS  will  "shift" your vehicle upwards  or  downwards
          into a different gear as applicable.

          For  example,  if  your vehicle  is  equipped  with  an
          overdrive  transmission, DRAGSTRIP PLUS  may  downshift
          into  overdrive if your vehicle's RPM across the finish
          line  in  your  transmission's high  (1:1)  gear  would
          exceed  your  engine's  optimum  shift  point   by   an
          excessive margin.

          Similarly, if your vehicle's RPM across the finish line
          would  be  below  your  engine's  optimum  shift  by  a
          considerable  amount, DRAGSTRIP PLUS will upshift  into
          your transmission's next lowest available gear.

          In  either case, DRAGSTRIP PLUS will inform you of  the
          action  it  took  via  appropriate  messages  prior  to
          displaying  your vehicle's E.T. (in certain cases,  you
          may be able to set your vehicle's finish-line gear back
          to your original setting; however, most of the time you
          will not want to).

DRAGSTRIP PLUS Camshaft Type
          The  type  of  camshaft in your engine can  potentially
          have quite an effect upon your engine's operation.

          Generally,  roller cams are more efficient than  solid-
          lift  camshafts,  while solid-lift camshafts  are  more
          efficient are than hydraulic cams.
          Roller  and  solid-lift cams lift the  cylinder  valves

          higher  and  hold them open far longer allowing  useful
          airflow into the cylinders than hydraulic cams, for any
          given amount of total camshaft duration.

          Most  sport  cars  and street hot  rods  use  hydraulic
          camshafts due to their ease of maintenance, while  most
          serious  street  machines  generally  use  solid  cams.
          Roller  cams,  far more expensive overall,  are  mainly
          used by all-out race cars only.

Total Camshaft Duration
          Enter  your camshaft's total, or "advertised" duration.
          "Total duration" refers to how long the camshaft  holds
          open a given cylinder valve above a set reference point
          (usually  .004" valve lift), as measured in degrees  of
          camshaft arc.

          A  camshaft's total duration has a direct and  dramatic
          effect   upon   your   engine's  operation,   including
          horsepower,   shift   point,  powerband   width,   idle
          characteristics,  fuel  economy, effective  compression
          ratio,  vacuum  for vehicle accessories such  as  power
          brakes,  and  other  less  significant,  but  important
          factors.   The bigger an engine is, the less  effect  a
          given   camshaft  will  have  on  the   engine's   idle
          characteristics,    fuel    economy,    and     overall
          driveability..

          DRAGSTRIP   PLUS   takes   all   these   factors   into
          consideration, therefore it is important that you enter
          the  correct  duration.  If  available,  refer  to  the
          factory spec card included with the cam.
          However,  due to the algorithm employed by the program,
          DRAGSTRIP  PLUS  can tolerate a substantial  degree  of
          error, as long as you correctly answer the majority  of
          everything else the program asks you.

          See  Chapter  8,  "Combination Advice", for  additional
          help  in choosing the correct camshaft profile for your
          engine combination.

          If  you  have  a SPLIT PROFILE camshaft with  different
          intake  and exhaust durations, enter the mean (average)
          value  of  the  two  durations  (upcoming  releases  of
          DRAGSTRIP  PLUS will make this task unnecessary).   For
          example, if the intake valve's total duration is  280o,
          and  the exhaust valve's total duration is 288o,  enter
          the average value of the two figures, which is "284".

               EXAMPLE:  Intake valve's  duration is .280 degrees
               Exhaust valve's duration is 288 degrees 
               (280 + 288) / 2 = 284 duration [average value]      

          A  popular total duration for many mild street machines
          is  280 degrees;  all-out street machines employ  total
          durations  in  the  290 to 325 degree range,  depending
          on engine size.

          See  Chapter  8,  "Combination Advice", for  additional
          help  in choosing the correct camshaft profile for your
          engine combination.

Camshaft Duration At .050"
          Enter  your  camshaft's duration at .050"  valve  lift.
          This  figure  is  determined by how long  the  camshaft
          holds open a given cylinder valve above a set reference
          point,  .050"  valve lift, as measured  in  degrees  of
          camshaft arc.

          The   relationship  between  this   figure,   and   the
          camshaft's  total  or advertised duration,  taken  into
          consideration with the maximum valve lift (both entered
          separately),  allows DRAGSTRIP PLUS  to  calculate  the
          curve of the camshaft's airflow envelope.

          A  camshaft's  airflow envelope controls your  engine's
          operation  in virtually every aspect of its  operation,
          including its horsepower, shift point, powerband width,
          idle    characteristics,   fuel   economy,    effective
          compression ratio, vacuum for vehicle accessories  such
          as   power  brakes,  and  other  less  significant  but
          important factors.  The bigger an engine is,  the  less
          effect a given camshaft will have on the engine's  idle
          characteristics,    fuel    economy,    and     overall
          driveability..

          DRAGSTRIP   PLUS   takes   all   these   factors   into
          consideration, therefore it is important that you enter
          the  correct  duration.   If available,  refer  to  the
          factory spec card included with the cam.
          However,  due to the algorithm employed by the program,
          DRAGSTRIP  PLUS  can tolerate a substantial  degree  of
          error, as long as you correctly answer the majority  of
          everything else the program asks you.

          If  you  have  a SPLIT PROFILE camshaft with  different
          intake  and exhaust durations at .050", enter the  mean
          (average) value of the two durations (upcoming releases
          of  DRAGSTRIP  PLUS  will make this task  unnecessary).
          For example, if the intake valve's duration at .050" is
          230o,  and  the exhaust valve's duration  at  .050"  is
          236o, enter the average value of the two figures, which
          is "233".

               EXAMPLE: Intake valve's duration is 230 degrees

               Exhaust valve's duration is 236 degrees
              (230 + 236) / 2 = 233 duration at .050" [average valve]

          A popular duration at .050" for many street machines is
          230   degrees;   all-out  street  machines  use   .050"
          durations  in  the  240 to 265 degree  range,  depending
          on engine size.

Valve Lift
          In general, the higher your camshaft lifts the cylinder
          valves, the more horsepower your engine will make,  for
          any given camshaft duration and valve size.

          If  you  have  a SPLIT PROFILE camshaft with  different
          intake   and  exhaust  valve  lifts,  enter  the   mean
          (average)  value  of  the  two  (upcoming  releases  of
          DRAGSTRIP  PLUS  will make this task unnecessary).   If
          the  intake  valve's  lift is .480",  and  the  exhaust
          valve's lift is .492", enter the average value  of  the
          two figures, which is  "486".

               EXAMPLE:  Intake valve's  lift is .480" -  Exhaust
               valve's lift is .492"
               (480 + 492) / 2 = 486 lift [average value]

          TECHNICAL NOTE:    Enter the valve lift as measured
                       at  the  valve with the current rocker
                       arms installed on your engine.  If you
                       have   1.6   rocker  arms   but   your
                       camshaft's  valve lift is rated  at  a
                       1.5  ratio (for example), and  you  do
                       not know what the 1.6 rocker arm valve
                       lift  is, do the following: enter  the
                       1.5  rocker arm valve lift figure that
                       you are sure about, then enter 1.5  as
                       your engine's rocker arm ratio as well
                       (if  this is a new engine combination,
                       you    will    asked   this   question
                       automatically later on).  

                       Then,  after DRAGSTRIP  PLUS  has made
                       an initial computation of your vehicle's
                       E.T., change  the  rocker arm ratio  to 
                       its correct  value. DRAGSTRIP PLUS will
                       automatically  adjust   the   camshaft
                       valve  lift  to the proper  value  for
                       this  new  rocker arm ratio. A  common
                       valve  lift  for many street  cars  is
                       .480"  (enter as simply "480").

Camshaft Lobe Centers
          The  "camshaft lobe center separation" statistic refers
          to  the  built-in degree of physical separation between
          the intake and exhaust valve lobes of the camshaft,  as
          measured in degrees of camshaft arc.

          Generally, a lower number raises an engine's powerband,
          while a higher number lowers it.

          Erson   brand   cams  for  street  use  are   generally
          manufactured at 108 degrees of lobe center  separation,
          while  Competition Cams are usually set at 110 degrees.

          Many  stock factory camshafts use lobe centers  in  the
          range  of 112 to 118 degrees., while all-out race  cars
          frequently use cams with lobe center separations in the
          106 degree range.

          Be sure to enter the value shown on your camshaft card,
          regardless of whether your camshaft was "degreeded"  at
          installation  or not.  Later on you will be  given  the
          opportunity  to  enter  the  number  of  degrees   your
          camshaft was advanced or retarded, if any.

Camshaft Overlap
          Camshaft  overlap  is  the term used  to  describe  the
          period  when both of your engine's valves are  open  at
          the same time, as measured in degrees of camshaft arc.
          The  greater  the  camshaft's  overlap,  is,  the  more
          horsepower (potentially) the engine will make,  but  at
          an ever higher and higher RPM range.  In addition, high
          overlaps  reduce the streetability of the vehicle,  and
          usually waste large amounts of fuel.  However, keep  in
          mind that the bigger your engine is, the less effect  a
          given amount of overlap will have on the engine's  idle
          characteristics,    fuel    economy,    and     overall
          driveability..

          Most street cars employ camshafts in the range of 30 to
          70  degrees of valve overlap, while all-out  race  cars
          can have well in excess of 100 degrees of overlap.

          If  your  camshaft has an overlap of 60 degrees,  enter
          this as "060", or enter as "60" and press <ENTER>.   IF
          YOU  DO  NOT KNOW YOUR CAMSHAFT'S OVERLAP, OR  ARE  NOT
          SURE, ENTER "0" (OR PRESS THE <ENTER> KEY).

          However,  keep in mind that DRAGSTRIP PLUS' calculation
          of  your cam's "Overall Camshaft Profile" rating in the
          Advice  Screen will be the most accurate if  you  enter
          your camshaft's correct overlap.

Cam Installation Timing
          A  camshaft  can be physically installed during  engine
          assembly  "ahead"  or "behind" in  its  rotation,  when
          measured   in   respect  to  the  engine's   crankshaft
          rotation, or simply installed "straight up",  which  is
          the most common assembly procedure.

          In  general,  retarding a camshaft raises  an  engine's
          powerband peak, while advancing a cam lowers  it.   The
          effect  upon  a  vehicle's overall performance  depends
          largely  upon how well the various engine  and  vehicle
          parts match with each other as a total combination.

          An engine which is relatively overbuilt for the vehicle
          usually benefits from advancing the camshaft, while  an
          underbuilt engine normally benefits if the camshaft  is
          retarded.   If  the engine combination is balanced  and
          matches  the vehicle fairly well, the camshaft is  best
          installed straight up.

               Tip:      Most   street  cars  benefit   from
                  advancing    the    camshaft.      Consult
                  DRAGSTRIP   PLUS'  "Advice"   screen   for
                  specific    advice   based    upon    your
                  particular     engine     and      vehicle
                  combination.

          A  camshaft  can  be installed during  engine  assembly
          physically  "ahead" or "behind" in  its  rotation  when
          measured   in   respect  to  the  engine's   crankshaft
          rotation.

          Generally,  as  an engine's camshaft is  advanced,  the
          engine's powerband range lowers; as it is retarded,  it
          increases.

          Enter  the  amount  of  the camshaft's  deviation  from
          "straight  up"  installation, in degrees of  crankshaft
          rotation.

          A  popular amount to advance or retard a camshaft is  4
          degrees.

Intake Valve Size
          In  general,  the  larger your intake valves  are,  the
          better  your  engine will be able to breathe,  and  the
          more   horsepower  it  will  generate,  for  any  given
          camshaft duration and valve lift.

          Intake  valve  size is not as critical in  supercharged
          and  turbocharged engines, as the air-fuel mixture does
          not  have to be drawn in to the engine, but instead  is
          forced in under pressure.

          Popular  intake valve sizes for street use  are  1.94",
          2.02",  and 2.05", entered as "194", "202",  and  "205"
          respectively.

Exhaust Valve Size
          In  general,  the larger your exhaust valves  are,  the
          better  your  engine will be able to breathe,  and  the
          more   horsepower  it  will  generate,  for  any  given
          camshaft duration and valve lift.

          Exhaust   valve   size  is  potentially   critical   in
          Supercharged and turbocharged engines, because while  a
          large  volume  of air-fuel mixture is forced  into  the
          engine under pressure by the turbo or supercharger, the
          spent  exhaust gases are left to basically  find  their
          own way out of the engine.

          Popular  exhaust valve sizes for street use  are  .150"
          and  .160", or merely "150" and "160". Enter  as  "150"
          and "160" respectively.

Rocker Arm Ratio
          The  greater  the  rocker arm ratio,  the  further  the
          camshaft  will  open the valves for any given  camshaft
          duration.   In  addition, the greater  the  rocker  arm
          ratio,  the  longer  the camshaft will  hold  open  the
          valves above any given valve lift.

          Higher  rocker  arm ratios allow use of a  smaller  CAM
          than  would otherwise be necessary to achieve  a  given
          level  of  performance.  Normally, a Camshaft  equipped
          with  high  ratio  rocker arms will  produce  the  same
          horsepower  using somewhat less fuel  and  be  slightly
          more  "driveable" than a larger Camshaft equipped  with
          standard ratio rocker arms.

          Unless  your  camshaft is already too  large  for  your
          engine,  using  higher ratio rocker arms  will  benefit
          your engine.

          NOTE:      If  you change your engine's rocker arm
               ratio,   DRAGSTRIP  PLUS  will  change   your
               camshaft's  valve lift to  match.   You  will
               then  be  given a chance to either accept  or
               change  the new camshaft valve lift  computed
               by DRAGSTRIP PLUS.

          Small-block engines normally use rocker arm  ratios  of
          either 1.5 : 1,  1.52 : 1,  or 1.6 : 1, while big block
          engines most commonly use a 1.7 : 1 ratio.

          A  less cumbersome way to represent these ratios  would
          be  "150",  "152",  "160", and "170" respectively,  and
          that is what DRAGSTRIP PLUS is expecting.
          Enter a "1.52 : 1" rocker arm ratio as simply "152".

Carburetor Type
          Select   the   category   that  best   describes   your
          carburetor.   If  your engine is fuel injected,  select
          the "Injected" category.  In this event, DRAGSTRIP PLUS
          will  assume  that your fuel injection  system  is  the
          optimum one for your combination.

          A common carburetor for street use is the Holley.

Carburetor Size or CFM
          The  larger  the engine or the more radical the  engine
          combination, the larger the carburetor must be to allow
          the engine to fill its cylinders to capacity.

          If  you use a carburetor which is moderately too  small
          for your combination, your vehicle may run fairly close
          (or  even  the  same) as its potential  E.T.  with  the
          optimum  carburetor, but the engine's shift  point  and
          MPH will be sharply reduced.

          This  is because a carburetor that is smaller (up to  a
          certain  point) than optimum will increase the engine's
          low-end torque, and thus aid the launch of the vehicle.
          But  at  higher engine speeds, the engine runs  out  of
          air,  forcing the driver to shift short of the engine's
          RPM  potential.   This results in a  reduction  of  the
          vehicle's  top end acceleration, lowering  its  finish-
          line MPH.

          Enter 750 CFM as "0750", or enter it as "750" and press
          <ENTER>.   A  typical carburetor size for  many  street
          race  cars is a carburetor with potential to flow  from
          600 to 850 cubic feet of airflow per minute.

Air Induction
          Select  the air induction category that best fits  your
          vehicle.   If  you have a supercharger or turbocharger,
          you  will  be  asked to enter the amount  of  boost  it
          produces.

          If your vehicle is equipped with a hood scoop that does
          not  actually  direct air into the  carburetor,  select
          either "Ram Air" or "No Hood Scoop".  The actual choice
          would depend upon which selection bests describes  your
          vehicle's particular hood scoop.

Superchargers
          Superchargers  are  mechanically  powered  by  a   belt
          attached to the engine's crankshaft. Superchargers have
          an  advantage in that they produce a constant amount of
          boost,  regardless of engine RPM.  But they operate  at
          the  expense  of  fuel  economy, because  superchargers
          operate  full time, whether they are really  needed  at
          the  time or not.  They can also cause overheating  and
          maintenance problems in street machines.

          Superchargers  are not very efficient, because  of  the
          significant engine horsepower required to power them.

          NOTE:      At  the  present time,  DRAGSTRIP  PLUS
               makes  specific use of this information  only
               if  you  are using conventional racing fuels.

               If  you  select  nitromethane in  combination
               with  a  supercharger,  DRAGSTRIP  PLUS  will
               disregard  the  supercharger's  actual  boost
               completely,  under  the  assumption  you  are
               attempting to build a Nitromethane Funny  Car
               or Dragster.
         
               Although  DRAGSTRIP  PLUS  is  basically  not
               intended  for  use in designing  vehicles  in
               these  classes, it will work on  vehicles  of
               any  speed.   In  this case,  DRAGSTRIP  PLUS
               assumes   that   you  will   use   a   blower
               (Supercharger)  comparable in  capability  to
               those   commonly  used  by  others   in   the
               nitromethane  class.   Therefore,   it   uses
               default boost values for this class of racing
               vehicle only.
 
          If  your  combination uses conventional  racing  fuels,
          DRAGSTRIP  PLUS will use the boost value you  enter  in
          its process of computing your vehicle's horse-power and
          E.T.

          Enter  your  supercharger's boost in pounds per  square
          inch (PSI).

Turbochargers
          Turbochargers are powered by waste exhaust  gases  from
          the  engine.   They efficiently maximize  the  engine's
          horsepower potential at medium and upper engine speeds.
          But  at low engine speeds, turbochargers produce little
          or  no  boost, because the volume and velocity of waste
          engine  exhaust gases needed to efficiently power  them
          is sharply reduced.

          Enter  your  turbocharger's boost in pounds per  square
          inch (PSI).
          

Turbocharger / Supercharger Boost
          Turbochargers and superchargers are basically air pumps
          that  have  the potential to tremendously  increase  an
          engine's horsepower output, by forcibly packing a  much
          larger  quantity  of  air-fuel mix  into  the  engine's
          cylinders than the engine would normally be able to  do
          by itself employing pure cylinder vacuum only.

          Enter  your  supercharger  or turbocharger's  boost  in
          pounds per square inch (PSI).
          

Number of Turbochargers
          If  your  engine is turbocharged, you will be asked  to
          enter  the  number of turbochargers installed  on  your
          engine.

Intercooler Selection
          If  your  engine is turbocharged, you will be asked  to
          select  the  type  of  intercooler,  if  any,  that  is
          installed on your vehicle.

          Intercoolers  are radiator-like devices  that  aid  the
          performance of turbocharged vehicles by cooling the hot
          intake  charge  produced  by  the  turbocharger,   thus
          allowing a denser mixture to packed into the combustion
          chambers  of the engine.  However, this is accomplished
          at  the  expense  of a boost pressure drop  across  the
          intercooler.

          Aftermarket racing intercoolers work better than  stock
          intercoolers because they cool the intake charge  to  a
          greater degree, with a smaller pressure drop across the
          intercooler.

          Select  the  intercooler category that  best  describes
          your vehicle.

Manifold Selection
          Select the manifold type that best fits your vehicle
          according these definitions:

          "Tunnel Ram"      -This  is the tall, high  speed,
                            ram  air  effect manifold  built
                            for two carburetors.

          "High-rise single plane"    -Strip Dominator  type
                            manifold.

          "Medium-rise single   plane"   -Victor  Jr.   type
                            manifold.

          "Low-rise single plane"-Torker II type manifold.

          "Dual Plane/Sports    Cars"      -Performer   type
                            manifold,  and  most  production
                            sport car manifolds.

          "Stock cast iron smog"  -This  is the heavy,  cast
                            iron,  flat manifold that  comes
                            standard     on    most     non-
                            performance      V8       engine
                            production   cars    for    fuel
                            economy,  emission control,  and
                            cost-reduction purposes.

Ignition Selection
          Most street cars use ignition systems classified in the
          "High Performance" category.

          At  the  current time, DRAGSTRIP PLUS makes no  use  of
          this   information  other  than  for  general  advisory
          purposes, and is mainly included for future uses.

Piston Selection
          Normally,   serious  racing  applications  use   forged
          pistons, due to their greater strength and durability.

          At  the  current time, DRAGSTRIP PLUS makes no  use  of
          this   information  other  than  for  general  advisory
          purposes, and is mainly included for future use.

Engine Compression
          The higher your engine's compression is up to a certain
          point, the more efficient it will be. However, the fuel
          octane requirements of the engine go up sharply as  its
          compression ratio increases.

          Since DRAGSTRIP PLUS looks at your engine's operational
          or dynamic compression ratio, rather than its static or
          mechanical  compression  ratio,  the  exact  mechanical
          compression   ratio  is  unimportant.   This   is   why
          DRAGSTRIP  PLUS  does not include a  compression  ratio
          calculator.

          Enter a compression ratio of  "12.25 : 1"  as simply 
          "12.25".

          Most  street  race cars use compression ratios  in  the
          range  of  "8:1" to "10 : 1", because these compression
          ratios work well with pump gas.

Cylinder Head Selection
          The choice of the correct engine cylinder head type  is
          one  of the very few selections in DRAGSTRIP PLUS  that
          is absolutely critical that you make correctly.

          Unlike most other engine and vehicle selections used by
          the  program,  DRAGSTRIP PLUS has no way to  compensate
          for an incorrect head type selection, except in certain
          situations that occur more or less infrequently.

          NOTE:      Most  big  block  engines  produce  more
               horsepower using open chamber heads than  they
               do  with closed-chamber heads.  The reverse is
               true with small block engines.

Cylinder Head Porting
          Porting,  or  enlarging  a  cylinder  head,   if   done
          correctly, is a excellent way to (potentially)  gain  a
          lot of cheap horsepower.

          How  much  horsepower a given engine will gain  if  its
          cylinder  heads  are ported depends upon  a  number  of
          factors,  such as the horsepower output of the  engine,
          the  type  of cylinder heads in use, and especially  to
          what degree and how well the heads are ported.

Engine Fuel
          The higher your engine's compression ratio, the greater
          its need for increased fuel octane.

          DRAGSTRIP PLUS bases its fuel octane ratings upon  your
          engine's  operational  or  dynamic  compression  ratio,
          rather than its static or mechanical compression ratio.

          Thus two engines built with different combinations, but
          with  the same mechanical compression ratios and  using
          the  same fuel, may still receive different fuel octane
          ratings by DRAGSTRIP PLUS.

          Many  street machines typically use a fuel octane  that
          draws a 85 to 95 rating by DRAGSTRIP PLUS.  As long  as
          the  vehicle's ignition timing is retarded somewhat,  a
          fuel   octane  rating  this  low  will  usually   work.
          However, retarding the timing reduces the horsepower of
          the engine, lowering the vehicle's overall performance,
          and particularly its finish-line MPH.

          The  vehicle  cannot  attain  its  highest  degree   of
          performance until you use the optimum fuel octane  (95-
          105  rating),  AND  the  engine's  ignition  timing  is
          advanced to the optimum point for the higher octane but
          slower burning fuel.

Fuel Pump
          If  your  fuel delivery system (fuel tank,  fuel  pump,
          fuel   line)  is  inadequate  to  supply  your   engine
          throughout  its  RPM  range, from  launch  through  the
          finish   line,  the  E.T.s  and  especially  the   MPHs
          displayed by DRAGSTRIP PLUS may be substantially faster
          than your vehicle's actual track results.

          However, DRAGSTRIP PLUS will forecast the same E.T. for
          your  vehicle, whether it is starving for fuel or  not.
          DRAGSTRIP  PLUS  has no way of knowing to  what  degree
          your engine is short of fuel, for a number of reasons.

          It  is your responsibility to make sure your engine has
          an adequate supply of fuel throughout the quarter mile,
          just  as  it  is your responsibility to make  sure  the
          engine  has been properly assembled, installed,  tuned,
          and driven.

          DRAGSTRIP  PLUS will give you some warning of potential
          fuel delivery problems in its "Advice" screen, but this
          warning  will not affect the vehicle's predicted  E.T.,
          no matter what fuel pump selection you make.

Engine Quality
          "Superb"   If your vehicle is a no-breakout style
                     Stock or Super Stock class vehicle running
                     well below the class index, select
                     "Superb".
          
          "Outstanding"   If your vehicle is substantially
                     better built than most car in its class,
                     utilizing every conceivable engine build
                     and chassis optimization trick possible,
                     IRRESPECTIVE OF COST AND COMPLEXITY, or a
                     Stock or Super Stock style vehicle running
                     at or just above its class index, then
                     select "Outstanding".
          
          "Excellent"VIRTUALLY ALL WELL BUILT COMPETITIVE
                     VEHICLES FIT THIS CATEGORY, including ALL
                     street and Pro cars built through common
                     construction techniques and budgets typical
                     of average competitive vehicles in their
                     respective classes, with the sole exception
                     of Stock and Super Stock style vehicles.
          
          "Satisfactory"  If your vehicle is well built, but is
                     somewhat out of tune, or merely getting old
                     and starting to slow, select
                     "Satisfactory".
          
          "Marginal",If your vehicle is poor or hastily
                     assembled condition, badly mistuned,
                     suffering severe ring blowby, or is
                     crippled by mechanical defects, select
                     "Marginal".
          "Poor"     If your engine and vehicle is in very poor
                     drag racing condition , select this
                     category.

Elevation
          The  higher  the  track elevation, the less  horsepower
          your engine will make, and the slower your vehicle will
          run.   The  correct elevation is important to DRAGSTRIP
          PLUS  for  another reason: your vehicle's optimum  gear
          ratio   will   change  dramatically  with  changes   in
          elevation.

          Enter  your track's elevation in feet above sea  level.
          If  you believe your track's elevation is less than 100
          feet,  but  do not know its exact elevation, enter  "0"
          and press the <ENTER> key (or just press <ENTER> if you
          have not inputted an elevation previously).

          If  you believe your track's elevation is greater  than
          100  feet,  but  do not know its exact elevation,  call
          your track and ask them to provide this information.

Air Temperature
          The  hotter  the  air temperature, the less  horsepower
          your engine will make, and the slower your vehicle will
          run.   This is because hotter air is thinner than  cold
          air,  resulting in a smaller intake charge being  drawn
          in by the engine.

          Enter  the  air temperature at the time and place  your
          vehicle  will  run.  Keep in mind that  your  vehicle's
          MPH,  RPM,  horsepower, and DRAGSTRIP PLUS' calculation
          of  your combination's "optimum gear ratio" will all be
          affected by the air temperature you enter.

Relative Humidity
          Enter the relative humidity at the time and place of
          your vehicle's run.  If you do not wish to enter the
          relative humidity, press the <ENTER> key.  DRAGSTRIP
          PLUS will assume a median value of 75% as a basis for
          its calculations (unless you have previously entered a
          different humidity value).

Barometric Air Pressure
          The  higher the air pressure, the more horsepower  your
          engine will make, and the faster your vehicle will run.
          As the air pressure increases, the atmosphere increases
          in  density, resulting in a larger intake charge  being
          drawn in by the engine.

          Enter the barometric air pressure at the time and place
          of your vehicle's run.  If you do not wish to enter the
          air  pressure,  press the <ENTER> key.  DRAGSTRIP  PLUS
          will assume a median value of 30.00 as a basis for  its
          calculations  (unless  you have  previously  entered  a
          different air pressure).

          Keep  in mind that your vehicle's "optimum gear  ratio"
          is affected by the air pressure you enter.
          Enter  air  pressure values without the decimal  point,
          i.e., enter "30.12" as "3012".

          NOTE:   Enter the "adjusted" barometric air  pressures,
          such  as those given on T.V. broadcasts and newspapers,
          rather than the "absolute" air pressure, typically used
          by aviation.

          In   weather   suitable  for  drag   racing,   adjusted
          barometric air pressures typically range from 29.90  to
          30.50,  regardless  of elevation,  while  absolute  air
          pressure  readings range from 27.00 to 31.50, depending
          upon the current elevation above sea level.

Engine Temperature
          The  hotter  your engine is at launch, the slower  your
          vehicle  will run.  Select the engine temperature  that
          best  describes your vehicles condition at  launch  per
          the following definitions:

          "Cold"  -The  engine  has  been  allowed  to  cool
                  overnight,  or has been completely  cooled
                  down with a water hose.

          "Warm"  -The  engine  has air cooled  for  several
                  hours;  or  the engine started  out  cold,
                  but  the  driver did a lengthy  series  of
                  burnouts  or a couple of stages  prior  to
                  launch.

          "Hot"   -The  engine  has air cooled  an  hour  or
                  less between runs.

          "Burning"     -Back  to  back runs, such  as  when
                  someone  makes a hard run down  the  track
                  on  a  hot summer day, only to drive  down
                  the  return road, pull right back into the
                  staging lanes, and take off again.

          NOTE: This information primarily applies to street
               cars.    Because   all-out  race   cars   are
               typically  towed back after  each  run,  they
               stay  cooler  than  street  cars  and  remain
               "Cold" to "Warm".

          Dragsters in particular tend to remain cool, since
          their  engines are fully exposed to the  air.   If
          you run a dragster, choose "Cold".

          Press <ENTER> to accept the default if correct, or
          enter a new value.

Vehicle Body Style
          Select the body style that best describes your vehicle.
          The  "Fastback"  body  style  includes  relatively
          sleek  and  aerodynamic cars such as the Corvette,
          Camaro, GT Mustang, Trans Am, Vega, and Monza.

          The  "Sedan" body style includes relatively  large
          and  boxy cars such as the Chevy II Nova,  Malibu,
          Fairlane, and Monte Carlo SS.

Body Style Frontal Area
          Enter  your vehicle's total frontal body area, or cross
          section, in square feet.

          If you do not know or do not wish to enter this figure,
          press  the  <ENTER> key.  DRAGSTRIP PLUS will  make  an
          assumption  of your vehicle's frontal area  based  upon
          your vehicle's particular body style.

Driver Experience
          At  the  current time, DRAGSTRIP PLUS makes no  use  of
          this  information, other than for informative  purposes
          at  the  "Advice" screen.  Your selection will have  no
          effect  on  your vehicle's E.T., no matter what  choice
          you make.

          Press <ENTER> to accept the default if correct, or make
          a different selection.

Give Your Vehicle A Name
          If  you don't give your combination some kind of a name
          at  this  point, DRAGSTRIP PLUS won't save it when  you
          exit the program.

          In  fact,  you will lose your combination even  if  you
          switch  to a different vehicle in the vehicle database.
          Besides, any printouts you make will look better if you
          give your vehicle a name.

                Here are a few typical examples:
                    "Rick's '69 street Camaro"   
                    "Jeff's Dodge Dart 351"
                    "Denver SideKick 355 Nova"
                    "355 AMC Gremlin NOS Bomb"
                    "454 Blue Nova Terror"

E.T. Results Screen
          At  this  point, assuming DRAGSTRIP PLUS  doesn't  find
          anything  critically  wrong with your  combination,  it
          will compute and display your vehicle's E.T., MPH, RPM,
          Horsepower,  Optimum Gear and Stall, and  Biggest  E.T.
          losses, among other things.

          If DRAGSTRIP PLUS finds something critically wrong with
          your  combination, it will not display  your  vehicle's
          E.T.,  but  will  stop and report "One  or  more  fatal
          combination  errors", followed by a list of  the  gross
          combination  error(s) causing the  problem.   You  will
          then  be  given an opportunity to change the  offending
          entry  or entries (press <ENTER> until you come to  the
          applicable data change screen).

          NOTE:      At  the present time, the vast bulk  of
               DRAGSTRIP PLUS'  E.T. logic is geared  toward
               1/4   mile   tracks.   The  program  provides
               general  ballpark 60 foot and 1/8  mile  E.T.
               and  MPH estimates for the sake of the user's
               curiosity only -- no accuracy is implied over
               these shorter distances.
          

--------------------------------------------------------------------
                COMPUTER ENGINE ANALYSIS RESULTS SCREEN

Vehicle: #16  Small block Nova Date: 05-03-1994  13:41:29  3.00

MPH    Gear   Tire  RPM         Slip%
110.9  4.88   29.0  6903        10.0

Best possible ET, uncapped: 11.64    Using optimum Gear would
                                     lower your estimated
Est60 foot ET:(35.9 mph)     1.75    1/4 mile E.T. to: 11.91  sec.
Est1/8 mile ET:(  90.5 mph)  7.59
Est1/4 mile ET:(110.0 mph)  12.08    Optimum stall:           4518
                                     Optimum 1/4 mile Gear:   5.17
Biggest E.T. losses (in order):      or  use tire height of:  27.3"

Gear     -0.17                       Optimum 1/8 mile Gear:   6.34
Stall    -0.15                       or  use tire height of:  22.3"
Traction -0.13
------------------                   Gross Horsepower(aprox): 525.00
Total Losses: 0.45 seconds           Net Horsepower (exact):  389.23

    All calculations based upon current Elevation of 34 feet.

    <F1=HELP> <F2=NEW VEHICLE> <F4=DATABASE> <ENTER=CONTINUE>
                      <F7=PRINT> <F10=QUIT>
--------------------------------------------------------------

 
 NO  ATTEMPT  SHOULD BE MADE TO USE THE 60 FOOT,  1/8  MILE,
 HORSEPOWER,  OR   TORQUE FIGURES TO  OPTIMIZE  YOUR  ENGINE
 COMBINATION.
               Instead,  see  the E.T. Results,  Advice  and
               Engine   Statistics  screens   for   specific
               computer   suggestions   to   optimize   your
               engine's performance.



------------------------------------------------------------
                    COMBINATION PART RATINGS SCREEN

Vehicle: #16  Small block Nova       Date: 05-03-1994

RATING OF 100 = PERFECT:      Computer Suggestion(s):
-------------------------     ----------------------------

Fuel octane       113.5       Advance CAM -or- add more gear
Head type         110.3
Cam type          109.7       Try increasing Cam lobe centers
Total Duration    105.9
Header size       101.1       If this is a street machine:
Intake Manifold    99.3       Try smaller headers. (Press F1 for Help)
Compression        97.2
Exhaust valve size 96.9       Try larger carburetor(s)
Camshaft Profile   96.9
Port job           96.3       Traction may be better than "Good"
Carburetor CFM     95.9
Intake valve size  95.4       Using lower fuel octane will help (if
Cam Overlap        94.3       distributor timing on vehicle is reset)
Duration @.050"    94.0
Valve lift         93.3       Cooling engine completely would help


         <F1=HELP>  <F4=DATABASE>  <F7=PRINT>  <ESC=EXIT> 
                 <ENTER=CONTINUE>  <F10=QUIT>
-------------------------------------------------------------          












Chapter Six:  E.T. Discrepancy Errors


          What to do if your vehicle's E.T. comes out wrong
          -------------------------------------------------

          Don't expect DRAGSTRIP PLUS to always nail on the first
          try  the  precise  performance of the combinations  you
          give  it -- particularily if the combinations you enter
          are someone else's.
 
          In  fact, DRAGSTRIP PLUS will predict a vehicle's  E.T.
          correctly  only about half the time on the  first  try.
          The  rest  of  the  time you will have  to  juggle  the
          vehicle's input data to correct the predicted E.T.

          Here  are  the  biggest  contributing  factors  to   an
          incorrectly predicted E.T., listed in order of greatest
          importance and frequency of occurrence:
 
          1.  Engine  mis-tuned,  mis-assembled,   and/or
  	        poorly   driven.   DRAGSTRIP  PLUS  expects   your
      	        vehicle  to  be  flawlessly  assembled,  perfectly
	        tuned,  and superbly driven (if you have  selected
      	        "Excellent"    or   better   engine   construction
	        quality).

          2.  Insufficient  fuel delivery  to  the  engine
              during part or all of the run.

          3.  Traction losses incorrectly described to the
              program (re-read traction help).

          4.  Camshaft  lobe centers, overlap, and/or  cam
              installation   timing   unknown   or   incorrectly
              entered by user.

          5.  Vehicle's  actual weight differs  from  that
              entered into the program.

          6.  Air  temperature as entered  into  DRAGSTRIP
              PLUS  differs  significantly from the  actual  air
              temperature at the time of the vehicle's run.

          7.  The  engine's  actual  shift  point  differs
              substantially  from the shift point  predicted  by
              the program.

          While  there are several contributing causes to a major
          shift  point discrepancy, the most common cause  is  an
          engine  that is seriously overbuilt for its  underlying
          capabilities.

          For an extreme example, suppose that an otherwise STOCK
          small  block  engine  was  outfitted  with  a  set   of
          massively ported aluminum heads, .800" lift roller cam,
          large  tube  headers, and a large  1150  CFM  Dominator
          carburetor.

          From an airflow capability standpoint, this combination
          would easily rev to 8000 RPM or higher, but yet if  you
          actually  tried to shift it at this point,  the  engine
          would  explode.   The stock rods, crank,  valve  train,
          fuel  delivery  system, ignition  system,  etc.,  would
          prevent this engine from being shifted much higher than
          5500  or  6000  RPM,  well  below  this  engine's  true
          (combination) shift point of 8000 RPM.

          Since  DRAGSTRIP  PLUS takes it for  granted  that  you
          built  your combination in the optimum manner  (if  you
          have selected "Excellent" or better engine construction
          quality),  its prediction of this engine's shift  point
          would be way too high (8000 RPM or above), resulting in
          a  E.T.   that could easily be off by a second or  even
          more (typically on the slow side).

          Short  of  rebuilding such an engine from scratch,  the
          only other solutions to this problem would be to either
          select a different engine construction quality such  as
          "Poor"  or  "Satisfactory",  and/or  manually  set  the
          engine's  shift point in DRAGSTRIP PLUS yourself,  thus
          overriding the program's predicted shift point.  Better
          than  nine  times out of ten, this will result  in  the
          program  forecasting an E.T. that  is  quite  close  to
          actuality.   To manually set an engine's  shift  point,
          press  <ENTER> until you reach the "VEHICLE DATA CHANGE
          SCREEN", then select the shift point option.

          Once  again,  in order to obtain the best results  with
          DRAGSTRIP  PLUS,  it is important  that  you  read  and
          thoroughly understand all Help information provided  by
          DRAGSTRIP  PLUS for its required data inputs.   On-line
          Help  is  accessible throughout the program by pressing
          the <F1> key, and it should be systematically consulted
          until you become thoroughly familiar with this program.

          If  you cannot correct your vehicle's E.T. by following
          the  steps  listed above, please contact our  technical
          department at any time and leave a description of  your
          problem along with your name and number, and we will be
          happy  to  help you resolve it.  Our technical  support
          number  will  be displayed on your screen as  you  exit
          DRAGSTRIP PLUS.

          NOTE:  NO  ATTEMPT SHOULD BE MADE TO  USE  THE  60
          FOOT, 1/8 MILE, HORSEPOWER, OR  TORQUE FIGURES  TO
          OPTIMIZE YOUR ENGINE COMBINATION.

          Instead,  see the E.T. Results, Advice and  Engine
          Statistics    screens   for   specific    computer
          suggestions to optimize your engine's performance.
          
 












Chapter Seven:  Analysis And Ratings







Engine Analysis And Ratings

          Following  is a definition of terms used on the  ENGINE
          ANALYSIS SCREEN:
          
          "Combination / Design Rating"
               This   is  the  computer's  ranking  of  your
               engine's  overall  design as  a  combination.
               The  better  your  combination's  parts  work
               together, the higher this design rating  will
               be.   Street  machines generally  have  lower
               ratings  (in the 70 to 80 range) than all-out
               race cars do.
          
          "Engine-to-Vehicle Matchup Rating"
               This   rating  tells  how  well  your  engine
               matches  your vehicle.  A low rating  (60  or
               below)  might well indicate a gross mismatch,
               such  as a 9 second engine in street car,  or
               the  reverse of a street engine in a 9 second
               car.   Street  machines normally  draw  lower
               ratings  (in the 70 to 85 range) than all-out
               race cars do.  THE HIGHER THIS RATING IS, THE
               FASTER  YOUR VEHICLE WILL BE --EVEN  IF  YOUR
               FINAL   ENGINE   COMBINATION  PRODUCES   LESS
               HORSEPOWER THAN YOUR ORIGINAL COMBINATION.
          
          "Engine Overall Power Rating"
               This is a measure of how radical the computer
               thinks    your    engine    combination    is
               (irrespective  of actual engine  size),  with
               "10"  representing something absolutely  slow
               and  low  performance like a stock Volkswagon
               Beetle, and "90" representing a 4 second  Top
               Fuel Dragster.

          "Computer Estimated Shift Point"
               This  is the computer's estimate of the shift
               point  necessary  for  your  combination   to
               attain its highest possible finish-line  MPH,
               i.e., the MPH shown at the top of the screen.
               If  you cannot shift at this RPM, your engine
               is  either not built or tuned correctly.  For
               further information, read "Help" for the E.T.
               Results  screen.   See also  Help  under  the
               category of "shift point".
          
          "Estimated Engine Powerband Width"
               The  wider  your engine's powerband  is,  the
               faster  your  vehicle will (potentially)  be.
               Engines with wide powerbands need less  stall
               and  even  less gear than engines with  thin,
               narrow powerbands.
          
          "Engine Size in CID"
               Your engine's size (Cubic Inch Displacement).
          
          "Computer Predicted HP per CID"
               This  rating  is arrived at by  dividing  the
               computer's estimation of your engine's  total
               gross  horsepower at the flywheel  with  open
               exhaust  by  your engine's size (CID).   This
               figure  is  a matter of pride to many  engine
               builders, and can be used to settle  disputes
               as  to  which  of two engine combinations  is
               truly  the  most  powerful  from  a  relative
               standpoint,  ignoring engine size  and  other
               combination specifics.
          
          "Computer Est. of Lost Exhaust HP"
               This  is  the computer's estimation  of  your
               vehicle's exhaust system losses.  This rating
               does not apply to vehicles with open headers,
               as  the computer does not include header tube
               losses in this rating.
          
          "Nr. of Badly Mismatched Parts"
               Poorly  designed  or thin  powerband  engines
               often  have  one  or  more  badly  mismatched
               engine  parts in their combinations.   Street
               machines  with  two or more badly  mismatched
               parts may exhibit poor driveability.
               Badly   mismatched  engine   components   are
               highlighted in red.
          
          "Highest Rated Engine Part(s)"
               Any  engine component that is rated at  "100"
               by the computer is perfectly matched for your
               combination.  Generally, any rating over  100
               means the affected engine component is either
               "too radical", or just simply unnecessary and
               not  needed  for  your combination's  optimum
               performance.  The difference depends upon the
               part.   A carburetor or intake manifold  that
               draws a 110 ranking is "too radical", whereas
               a  Camshaft or head port job that  draws  the
               same  110 rating is simply "unnecessary"  for
               optimum  cost  vs. performance considerations
               and / or driveability.

          "Lowest Rated Engine Part(s)"
               Generally,  any rating under  100  means  the
               affected  engine component is  "insufficient"
               or   "not   enough"  for  your  combination's
               optimum performance.  However, headers  tubes
               are  the  main exception to this rule.   Many
               street   cars  perform  better  with  headers
               ranked below 100, typically 92 to 98.


------------------------------------------------------------
          
                    ENGINE STATISTICS SCREEN

Vehicle: #16 Small block Nova       Date: 05-03-1994

Combination / Design Rating:      85.6   Optimum Carb CFM: 800 - 1049
Engine-to-Vehicle Matchup Rating: 86.6   Opt Primary Header Len: 34.4"
Engine Overall Power Rating:      53.7

Computer Estimated Shift Point:   7318   Shift MPH is 1st gear:  47.3
Estimated Engine Powerband Width: 2800                2nd gear:  66.2
                                                      3rd gear: 116.4
Engine Size in CID :               383
Computer Predicted HP per CID:    1.28
Computer Est. of Lost Exhaust HP:  N/A

Nr. of Badly Mismatched Parts:     NONE

Highest Rated Engine Part(s):          Fuel octane Rating:     113.5
(100 = Perfect)                        Head type   Rating:     110.3

Lowest Rated Engine Part(s):           Duration @.050" Rating:  94.0
                                       Valve lift      Rating:  93.3

   <F1=HELP>  <F2=NEW VEHICLE>  <F3=ADVICE>  <ENTER=CONTINUE>
                      <F8=BACK>  <F10=QUIT>

------------------------------------------------------------









Chapter Eight:  Combination Advice







DRAGSTRIP PLUS Combination Advice
          If  you  pressed the <F3> key at the "Engine Statistics
          Screen",  DRAGSTRIP PLUS displays the  optional  Advice
          screen (see following page).

          Any  engine component that receives a "100"  rating  by
          the  computer  should be considered  perfectly  matched
          for your combination.

          Generally,  any part rated over 100 means the  affected
          component  is  either  "too radical",  or  simply  just
          unnecessary  and  not  needed  for  your  combination's
          optimum  performance.  The difference depends upon  the
          part.  A carburetor or intake manifold that draws a 110
          ranking  is "too radical", whereas a camshaft  or  head
          port  job  that  draws the same 110  rating  is  simply
          "unnecessary"  for  optimum  cost  versus   performance
          considerations and / or street driveability.

          Any  part  rated  under 100 means the  affected  engine
          component  is "insufficient" or "not enough"  for  your
          combination's  optimum  performance.   HOWEVER,  HEADER
          TUBES  ARE  THE PRIMARY EXCEPTION TO THIS  RULE.   Many
          street  cars perform significantly better with  headers
          ranked well below 100, typically in the 92 to 98 range,
          because the resulting lower engine RPM power band works
          better with the undersized gears and stalls most street
          machines typically employ.

          WARNING:Header  tubes with rankings in the  88  to
                  95   range  may  exhibit  chronic  exhaust
                  reversion    side   effects,    such    as
                  continually   blown  or   leaking   header
                  gaskets  and  / or continually  burned  or
                  worn   out  cylinder  head  exhaust  valve
                  guides.

          ANOTHER   DECEPTIVELY  IMPORTANT   STATISTIC   IS   THE
          CARBURETOR  SIZE  RATING.  A carburetor  rating  of  96
          would  naturally  seem to indicate  that  although  the
          carburetor's  size is somewhat small, it  ought  to  be
          satisfactory.  In reality, a carb rated at 96 or  below
          can   have  a  significant  negative  impact  on   your
          vehicle's  performance.   If your  carburetor  size  is
          rated below 100, you should try larger carburetors  and
          carefully  note the resulting shift points,  MPHs,  and
          overall  E.T.s.  A slightly lower rear end  gear  ratio
          may  be  necessary  to  compensate  for  the  resulting
          increased (raised) engine RPM power band range.


-----------------------------------------------------------------          
                  COMBINATION PART RATINGS SCREEN

Vehicle: #16  Small block Nova       Date: 05-03-1994

RATING OF 100 = PERFECT:       Computer Suggestion(s):
-------------------------      ----------------------------
Fuel octane        113.5       Advance CAM -or- add more gear
Head type          110.3
Cam type           109.7       Try increasing Cam lobe centers
Total Duration     105.9
Header size        101.1       If this is a street machine:
Intake Manifold     99.3       Try smaller headers. (Press F1 for Help)
Compression         97.2
Exhaust valve size  96.9       Try larger carburetor(s) 
Camshaft Profile    96.9
Port job            96.3       Traction may be better than "Good"
Carburetor CFM      95.9
Intake valve size   95.4       Using lower fuel octane will help (if
Cam Overlap         94.3       distributor timing on vehicle is reset)
Duration @.050"     94.0
Valve lift          93.3       Cooling engine completely would help


       <F1=HELP>   <F4=DATABASE>  <F7=PRINT>   <ESC=EXIT>
                  <ENTER=CONTINUE>   <F10=QUIT>
-----------------------------------------------------------------
          

          Overall  camshaft profile: DRAGSTRIP  PLUS  rates  your
          camshaft in two ways: by its individual statistics, and
          by the camshaft lobe profile's overall effectiveness in
          matching  up with your engine combination as  a  whole.
          Your camshaft's matchup with your engine is called  the
          "Overall Camshaft Profile" rating.

          This statistic rates only the camshaft's lobe profile;
          it does not consider the camshaft's lobe center
          separation, or whether the camshaft is advanced or
          retarded (both of which are considered separately).

          While DragStrip Plus can easily determine whether any
          given camshaft is too large or small for any engine
          combination, only you can determine whether it is the
          camshaft that is incorrect for the engine, or whether
          it is engine that is too stock or radical for the
          camshaft.  You must make this determination based upon
          the direction you wish your combination to take.

          Keep in mind that even if DragStrip Plus gives your
          camshaft a perfect "Overall Camshaft Profile" rating of
          100, this does not mean that a still better camshaft
          profile does not exist.  For example, a roller cam
          profile rated at 100 will potentially produce far more
          horsepower than will a hydraulic cam profile also rated
          at 100.

          Among other reasons, this is because certain camshaft
          profiles (especially hydraulic cams) may have excessive
          spread between their total duration and duration at
          .050" statistics, occasionally generating a variety of
          messages such as "too much total duration".  Yet this
          same camshaft profile may still be given an overall
          ranking of 100, based upon other considerations.

          In  short, in order to determine the best camshaft  for
          your  engine  combination, you should  experiment  with
          various combinations of camshaft profiles, lobe  center
          separations,  and  installation  timings  (advance  and
          retard each cam you try).
          
          












Chapter Nine:  Combination Changes







Vehicle Data Screen
          To  change  any  vehicle statistic, merely  select  its
          highlighted character.  DRAGSTRIP PLUS will  allow  you
          to  change  the  value of the item you  selected,  then
          recalculate your vehicle's E.T. and re-evaluate all its
          suggestions in the light of the change you made.

          Select  the  "Ignore  Engine  Data"  option  to   force
          DRAGSTRIP  PLUS to calculate your vehicle's E.T.  based
          solely  upon its finish-line MPH.  This works  assuming
          you entered your combination into the program using the
          "Detailed  Analysis"  mode.   This  basically  turns  a
          "Detailed Analysis" into a "Quick Compute" analysis;  a
          reminder  message will appear at the top  of  the  E.T.
          Results  screen.  It is easy to reverse this  selection
          [see following].

          Select  the "Computer Engine Analysis" option to  force
          DRAGSTRIP  PLUS to calculate your vehicle's E.T.  based
          upon   its   engine  combination.   If  you  have   not
          previously  entered your combination's  engine  related
          data  into  the program, you will be asked  to  do  so.
          This   selection  basically  turns  a  "Quick  Compute"
          analysis  into a "Detailed Analysis".  It also reverses
          the  effects  of  the "Ignore Engine data"  option  (if
          previously selected).
          
          
-----------------------------------------------------------------
                    VEHICLE DATA SUMMARY SCREEN

Vehicle: #16  Small block Nova   Date: 05-03-1994

MPH  Gear Tire RPM  Slip%
110.94.88 29.0 6903 10.0

1) Finish-line MPH:            110.9            G) Body Style:
Sedan
2) Gear:      4.88             H) Frontal Area: 26
3) Tire Height:                29               J) Elevation:
34
4) Finish-line RPM:            6903             K) Air
Temperature:  84
5) Converter Slip%:            10               L) Air
Pressure:     29.90
6) E.T.:      12.08            M) Relative Humidity:  83
7) Driver Weight:              145              N) Engine
Temperature:  Warm
8) Vehicle Weight:             3400             P) Change
Vehicle Name
9) Net HP:    389.23           Q) Vehicle DataBase
A) Nitrous HP:None             R) Ignore engine data (if any)
B) Exhaust System:             Open             S) Computer
engine analysis
C) Shift Point:                7318
D) Stall:     4000
E) Tires:     Slicks
F) Traction:  Good

  <F1=HELP>  <F2=NEW VEHICLE>  <F4=DATABASE>  <ENTER=CONTINUE>
                     <F8=BACK>   <F10=QUIT>
-----------------------------------------------------------------

          
          Press <ENTER> to continue on to the next screen.

Engine Data Screen
          To  change  any  engine statistic,  merely  select  its
          highlighted character.  DRAGSTRIP PLUS will  allow  you
          to  change  the  value of the item you  selected,  then
          recalculate your vehicle's E.T. and re-evaluate all its
          suggestions in the light of the change you made.
          
 
-----------------------------------------------------------------
                    ENGINE DATA SUMMARY SCREEN

Vehicle: #16  Small block Nova   Date: 05-03-1994

1) Header Tube size:         1 3/4       E) Ex.Valve Size:
1.60
2) Exh. Pipe size:           N/A         F) Rocker Ratio:  1.5
: 1
3) Engine CID:383 Chevy      G) Carburetor: Holley
4) Transmission:             Turbo 350   H) Carb. CFM:850
    1st Gear: 2.46           J) Air Induction:   Hood Scoop
    2nd Gear: 1.76           K) Boost:   N/A
    3rd Gear: 1.00           L) InterCooler:N/A
    4th Gear: N/A            M) Manifold:   Med.-rise single
plane
    5th Gear: N/A            N) Ignition:   Hi-performance
5) Finish Line Gear:         3rd         P) Pistons:  Forged
6) Camshaft:  Solid          Q) Compression:10 : 1
7) Tot. Duration:            310         R) Head Type:Closed-
Chamber iron
8) Dur. @ .050":             260         S) Port Job: Thorough
9) Valve lift:.570"          T) Fuel:    110+ octane Racing
Fuel
A) Lobe Centers:             108         U) Fuel pump:125+ gpm
Electric
B) Cam Overlap:              75          V) Engine
Quality:Excellent (Most Cars)
C) Cam Timing:3 Advanced     W) Driver Skill:    Experienced
D) In. Valve Size:           2.02

  <F1=HELP>  <F2=NEW VEHICLE>  <F4=DATABASE>  <ENTER=CONTINUE>
                      <F8=BACK>  <F10=QUIT>
-----------------------------------------------------------------          
          
          Press <ENTER> to continue on to the next screen.












Chapter Ten:  Using Dyno Mode Analysis







Using The Dyno Approach Mode
          When  using the Dyno Approach Mode DRAGSTRIP PLUS  will
          begin  asking  a  series  of questions,  starting  with
          engine horsepower.

          NOTE:      Since  relatively few users of DRAGSTRIP
               PLUS  make use of the program's Dyno  Approach
               mode,  this chapter was moved toward the  rear
               of this manual.

Engine Horsepower
          The  first  question asked by DRAGSTRIP  PLUS  in  Dyno
          Approach Mode regards your engine's horsepower.
          Enter your engine's horsepower (as produced at the same
          elevation above sea level the vehicle will actually  be
          run).   You  will next be asked whether this  entry  is
          "Gross" or "Net" horsepower.

          Keep in mind that if you enter your vehicle's net (rear
          wheel)  horsepower  rather than  its  gross  (flywheel)
          horsepower,  the  resulting  E.T.s  will  be  far  more
          accurate.

Gross And Net Horsepower
          If  the  horsepower figure you entered was measured  at
          the  engine flywheel, select "Gross" horsepower.  Dynos
          measure  horsepower  this way; cars  built  during  the
          1960's were rated this way.

          If  the  horsepower figure you entered was measured  at
          the  vehicle's  rear wheels, select  "Net"  horsepower.
          All new cars are rated in net horsepower.  In addition,
          some   businesses   such  as  "Brake  Check",   measure
          horsepower this way.

          Press <ENTER> to accept the default, which is displayed
          at the top of the screen.

Driver's Weight
          Input your weight only.  Your vehicle's weight will  be
          entered  separately.   Separating the  driver's  weight
          from  the  vehicle's  is useful in  certain  situations
          where  there  are  substantial  differences  in  weight
          between two drivers of the same vehicle.

          In  general,  the  less the vehicle  weighs,  the  more
          profound the effect of changing drivers will be.

Vehicle's Weight
          Input  the  weight of the vehicle only.  The weight  of
          the vehicle's driver is entered separately.  Separating
          the  vehicle's  weight  from the  driver's  allows  the
          program to more accurately calculate the engine's  true
          net horsepower.

          See Appendix C for commonly used vehicle weights.

Weight Change
          You  can choose between having the program re-calculate
          your  vehicle's net horsepower, or estimating the  MPH,
          RPM,  traction, and E.T. changes the weight change will
          have upon the vehicle.
          

Nitrous Oxide Use
          The program is not asking if a nitrous oxide system  is
          on  your  vehicle, but whether or not a nitrous system,
          if any, was used to make this particular pass.

Amount Of Nitrous Oxide Horsepower
          Enter  the estimated horsepower output of your  Nitrous
          Oxide  kit.   The program will assume that the  Nitrous
          system was used in the optimum manner, i.e., throughout
          the  quarter  mile, including right  off  the  starting
          line.

          If  you  used the nitrous system for only half a  pass,
          the program's E.T. estimates may be off by as much as a
          second.   This  is  particularly true  when  a  nitrous
          system is used during only the last half of the quarter
          mile.

          To  compensate  for this effect, it  is  acceptable  to
          change  the  amount of horsepower you  enter  into  the
          program.   For  instance, if your  vehicle  has  a  250
          horsepower nitrous system, but was only used during the
          last  half of the track, input 100 horse-power  instead
          of the normal 250.

          If  the  same 250 horsepower system is only used during
          the   first  half  of  the  quarter  mile,  input   200
          horsepower  instead  of  250.   The  reason  for  these
          differing horsepower input recommendations is based  on
          the  fact that nitrous has a much greater effect  on  a
          vehicle's performance when it is used during the  first
          half  of the quarter mile, verses the same system  used
          during only the last half.

          If  you  are  using  the  Quick  Compute  Mode,  it  is
          important  to  realize that if you  are  entering  your
          vehicle for the first time, the amount of nitrous oxide
          you  select  will  have  but little  effect  upon  your
          vehicle's estimated E.T.

          This  is  because the program assumes that the MPH  and
          RPM  at  the  end  of  the  quarter  mile,  as  entered
          previously,  was achieved as a result  of  the  nitrous
          horsepower level you are now about to input.

          Of  course  DRAGSTRIP  PLUS can calculate  what  effect
          various  amounts of nitrous oxide horsepower will  have
          upon  any given vehicle.  These kind of changes  should
          be  made after the program has already calculated  your
          vehicle's  base E.T., at the data change screen.   This
          will   force  MPH,  RPM,  gear,  stall,  and   traction
          recalculations  that will result  in  a  new  estimated
          likely E.T.

Nitrous Horsepower Usage
          If you select the first option, DRAGSTRIP PLUS WILL NOT
          ADD the Nitrous horsepower you just selected to your
          engine's overall horsepower output.  If you select the
          second option, DRAGSTRIP PLUS WILL ADD the (gross)
          Nitrous horsepower you just selected to your engine's
          overall horsepower output.

Stall Point
          IF  YOU HAVE AN AUTOMATIC TRANSMISSION, the response is
          easy:  Your stall point is the highest RPM your  engine
          can hold in low gear with the brakes held as tightly as
          possible (or transbrake set) without your drive  wheels
          beginning  to  spin,  or the vehicle  creeping  forward
          against the brakes.

          However, in certain situations, you will need to adjust
          this  value  upwards by a couple hundred or  more  RPM,
          such as if your vehicle is equipped with a poor set  of
          tires  relative to the strength of the  engine,  or  if
          your  vehicle  has  a  poor set of  brakes.   In  these
          situations the drive wheels will begin to spin  or  the
          vehicle  creep  forwards well below  your  transmission
          converter's true stall point, resulting in the need  to
          adjust the observed stall RPM upwards by 10% or so.

          IF YOU HAVE A MANUAL TRANSMISSION, only a great deal of
          racing   experience  with  both  manual  and  automatic
          transmissions  can  allow one to  properly  supply  the
          correct  stall point.  The true stall point the program
          is  looking  for is not the RPM the clutch is  "dumped"
          at, but is nearer the low RPM the engine is pulled down
          to as the clutch grabs and the vehicle gets underway.

          The  best approach for coming up with the correct stall
          point  for a manual transmission is to let the  program
          tell you what it is!  Enter your best guess, then later
          come  back after the E.T. results screen and fudge  the
          stall  point one way or another by 15% or so until  the
          vehicle's E.T. looks right.

          If  you  use this approach, be sure to watch the amount
          of  stall loss on the E.T.  results screen. You can use
          this  information to determine which way (and how much)
          to move your stall point guess.

Exhaust System
          Select your vehicle exhaust system according to the
          following definitions:

          Uncapped Exhaust -refers to vehicles running open
                     headers.
          This does NOT mean open exhaust manifolds, if this is
          the case, you should input "Free Flowing" or "Average"
          in the menu selection instead of "Uncapped Exhaust".

          Free Flowing     -refers to a brand of exhaust mufflers
                    that  are particularly free flowing (such  as
                    Flowmaster and Dynomax) AND matching  exhaust
                    system of headers and large (3'' diameter  or
                    larger)  exhaust  pipes.  If  you  have  Free
                    flowing  type mufflers but have only 2  1/2''
                    exhaust  pipes  all  the way  through  or  no
                    headers on the engine, input "Average" in the
                    menu selection instead of "Free Flowing".

          Average   -means  an  exhaust  system  with  relatively
                    small-tube headers, dual exhaust, and average
                    mufflers such as Sonic Turbos, Hookers, etc.

          Dual      -means  an  exhaust system that  consists  of
                    exhaust   manifolds,   two   exhaust   pipes,
                    mufflers, and no headers.

          Single    -refers   to  an  exhaust  system   that   is
                    comprised  of  exhaust  manifolds,  a  single
                    exhaust  pipe,  a  muffler  and/or  catalytic
                    converter, and no headers.

Tire Height
          Enter  the diameter, or height of your vehicle's  drive
          wheels in inches. DRAGSTRIP PLUS does not automatically
          add  an allowance for tire growth, so you must manually
          allow for this yourself.

          The  amount tires "grow" varies with the type  of  tire
          and  other factors, such as the height and width of the
          tires, the speed of the vehicle, tire air pressure, and
          temperature  of  the track and tires.  For  example,  a
          hard radial tire on a 90 mph in-the-quarter sports  car
          may  grow less than 1/2 inch, while a soft slick  on  a
          300 mph Top Fuel Dragster may grow 4 inches or more.
          Enter a tire diameter such as "28 1/2" as "28.5".

Tire Selection
          The  type of tires on your vehicle has a lot to do with
          how well it "hooks up" and accelerates off the starting
          line.   Select  the tire category that  best  fits  the
          brand  and  type  of  tires you have  on  your  vehicle
          according to the following definitions:

          "Slicks"  -are the wide, bald, sticky racing tires
                    used  almost exclusively by  the  faster
                    drag  cars.  Slicks are illegal for  use
                    on  the  street  due  to the  fact  they
                    float  in  the  rain, and are  generally
                    used only at the track, or by the faster
                    Pro Street machines.

          "McCrearys"     -if  you have any similar type  of
                    super   traction  soft-compound   street
                    racing  tires such as Mickey Thompson's,
                    etc.   These kind of tires usually  wear
                    out  in  just  2,000 miles  or  less  of
                    street use.

          "Pro-Tracs"    -generally cost less than the soft-
                    compound   class  of   tires   such   As
                    McCrearys  above,  and  usually  last  a
                    whole  lot longer as well. This type  of
                    tire usually wears out in roughly 10,000
                    miles  of street use, and are the  tires
                    of  choice for most 13-and-14 second hot
                    rods.

          "Radials" -generally  last 25,000 miles  or  more.
                    They  are the tire of choice for  almost
                    all  production sport cars, and most 15-
                    and-16 second hot rods.

Traction
          The computer uses this information, in combination with
          other factors such as your vehicle's type of tires  and
          its  net horsepower and weight, to decide just how much
          E.T.  your particular vehicle will lose due to traction
          difficulties.  So think of your input as only  a  rough
          guide to the computer.

          If  you are using DRAGSTRIP PLUS' "Quick Compute" mode,
          select  the traction category that best describes  your
          vehicle's  actual track performance results during  the
          particular  pass  you  are  entering  (and   NOT   your
          vehicle's normal or best traction conditions!).

          If you are using DRAGSTRIP PLUS' "Detailed Analysis" or
          "Dyno  Approach"  modes, select the  traction  category
          that   best  describes  your  vehicle's  BETTER   track
          performance results (if known). If your vehicle  is  in
          the  design or construction stage and has not yet  made
          its  first pass, you will need to supply DRAGSTRIP PLUS
          with an advance projection of your vehicle's traction.

          You  can arrive at this advance projection by comparing
          your  combination  with  the  current  performances  of
          similarly  built vehicles, or if no such  guides  exist
          for  your combination or are unavailable in your  area,
          by  making  a  careful estimation  based  upon  logical
          consideration of all the facts. If you make  a  serious
          mistake,  DRAGSTRIP PLUS will warn you via the  "Advice
          Screen".

          Use  the  following information as a guide as necessary
          in arriving at a projection of your vehicle's traction:

                1.    ALL-OUT  RACE CARS AND "TRAILER  CARS"
                normally use slicks. These vehicles and  can
                usually   expect   "Excellent"   or   "Good"
                traction;   if   not,  such  vehicles   will
                normally  be  altered  until  they  do   get
                excellent or great traction.

                2.     PRO-STREET   MACHINES  often   employ
                either slicks or soft compound street  tires
                such   as  McCrearys,  depending  upon   the
                occasion  and  driver.   Such  machines,  if
                running  on  engine power  alone,  can  most
                often expect:

                "Excellent"    traction  if  on  slicks,  or
                         "Excellent"  to "Good" traction  if
                         using soft compound street tires.
 
                On  nitrous oxide, these machines can expect
                "Excellent"  to "Satisfactory"  traction  if
                using  slicks, and anywhere from  "Good"  to
                "Marginal"  traction if using soft  compound
                street  tires.  "Satisfactory"  traction  is
                the  average for most well-built  11  second
                or   faster  street  machines  running   200
                horsepower  or  more  of  nitrous  oxide  on
                street tires.

                3.    SERIOUS STREET CARS in the  13  to  15
                second   range  can  expect  anywhere   from
                "Excellent" traction if using soft  compound
                street   tires,   "Good"  to  "Satisfactory"
                traction  if using Pro-Trac type tires,  and
                "Satisfactory" to "Poor" traction  if  using
                hard radial tires and/or nitrous oxide.

                4.    NEAR STOCK SPORTS CARS AND STREET CARS
                frequently  use  radial tires,  but  in  the
                hands  of a capable driver, can still expect
                "Excellent" to "Satisfactory" traction,  due
                to    these    machine's   relatively    low
                horsepower  outputs, high rear end  gearing,
                and relatively heavy vehicle weights.


DragStrip Plus' Traction Definitions

          "Excellent"    traction means just that practically  no
                   perceivable  tire  spin  on  launch  AT   FULL
                   THROTTLE  (and "spraying right out the  gates"
                   on  nitrous  oxide, if this happens  to  be  a
                   nitrous pass that you are entering).

          "Good"   traction  means  either  your  tires   quickly
                   "hook  up" off the line at full throttle  (and
                   nitrous,  if this is a NOS pass), or  that  in
                   order  to  prevent the tires from starting  to
                   spin,  you  must initially leave the  line  at
                   part  throttle,  then can  immediately  "floor
                   it"  (or  begin to "spray") with  no  traction
                   loss at all at that point right off the line.

          "Satisfactory"means  that your vehicle  is  capable  of
                   spinning  all  the  way  down  the   60   feet
                   launching  pad,  except  that  in   order   to
                   prevent   this  from  occurring  as   far   as
                   possible,  you  have to run at  half  throttle
                   (and  delay use of nitrous oxide if this is  a
                   nitrous  pass)  until near the  top  of  first
                   gear or the beginning of second gear.

          "Marginal"     means  the vehicle will "break out"  and
                   lose  traction at virtually any  point  during
                   the  first portion of the track, if the driver
                   were to floor it all the way (or "squeeze  it"
                   with  nitrous oxide, if this is a nitrous pass
                   you are inputting).

          "Poor"   traction  means that despite the best  efforts
                   of  the  driver to control it, the vehicle  is
                   liable  to  spin  at virtually  any  speed  or
                   position  on  the track.  In first  gear  (and
                   often  second),  the  vehicle  is  capable  of
                   smoking the tires, even at half throttle.   An
                   good  example  of  "Poor"  traction  would  be
                   would  be a 12 or 11-second car attempting  to
                   use hard radial tires!

Naming Your Vehicle
          At  this  point DRAGSTRIP PLUS is going to ask  you  to
          give your vehicle a name.

          If  you don't give your combination some kind of a name
          at  this  point, DRAGSTRIP PLUS won't save it when  you
          exit  the program or even allow you to return to it  if
          you load a different vehicle from the vehicle database.
          Besides, any printouts you make will look better if you
          give your vehicle a name.

                Here are a few typical examples:
                   "Rick's '69 street Camaro"
                   "Denver SideKick 355 Nova"
                     "454 Blue Nova Terror"
                     "Jeff's Dodge Dart 351"
                   "355 AMC Gremlin NOS Bomb"












Appendix  A
-----------






Changing Computer's Shift Point

          If  used  the "Detailed Analysis" mode to compute  your
          vehicle, your combination's optimum engine shift  point
          will have been set by the computer.
          Still,  at  any  time  you can  change  the  computer's
          estimation  of  your vehicle's optimum shift  point  to
          whatever  value you choose; however, keep in mind  that
          your  vehicle's MPH will be frozen at its current value
          regardless  of  subsequent  changes  to  other  vehicle
          stats,  until the `Computer Engine Analysis' option  is
          selected at the Vehicle Data Summary screen.

          This  will  cause  the computer to replace  your  shift
          point estimate with its own, and allow it to once again
          compute  what it thinks your vehicle's finish-line  MPH
          will  be  (and  allow it to generate  reports  on  your
          engine combination again!).

          The engine shift point is one of the few stats that  is
          fairly  critical.  Note that changing the  shift  point
          has  a  fairly dramatic effect upon the vehicle's E.T.;
          resist the temptation to experiment with this and enter
          only  what  shift point you know from track  experience
          will  result in the vehicle's highest possible  finish-
          line  MPH (note the emphasis is on track MPH, not track
          E.T).   Any   other  method  will  result  in   grossly
          inaccurate results.

          See  chapter  6  ("E.T. Discrepancy Errors")  for  more
          information on this topic.

Transmission Slippage Change
          Once  you enter your transmission's slippage,  you  can
          choose  between  having the program  re-calculate  your
          vehicle's  finish-line  MPH,  or  calculating  its  new
          finish-line RPM.

          The rate your transmission falls behind your engine  in
          its  rotation  is call "transmission slippage",  or  in
          case of an automatic transmission "converter slippage".
          Most  automatic transmission converters slip an average
          of  10%.   This is the default valve used by  DRAGSTRIP
          PLUS.   If  you  believe converter slips somewhat  less
          than  average,  enter "08" for 8%;  if you  think  your
          converter is somewhat looser than average, enter 12%.

          Manual  transmissions  by nature exhibit  virtually  no
          slippage.   If  you  have a manual transmission,  enter
          "00" for 0%.












Appendix  B
-----------






Unfinished Vehicle In Database
          If  you exit DRAGSTRIP PLUS while you are in the middle
          of  entering a new vehicle, the next time you  run  the
          program  DRAGSTRIP PLUS will ask you  if  you  wish  to
          resume work on this vehicle, or start a new combination
          from scratch.

          If  you merely wish to access the vehicle database  and
          do  not  wish  to make either selection at the  present
          time,  press <ESC> or the <F8> key.  You will  then  be
          able to access and load a previously stored combination
          from  the vehicle database.  The next time you  restart
          DRAGSTRIP PLUS, you will be reminded once again of your
          unfinished vehicle combination.

Vehicle Database
          Press <F4> to select a vehicle record.
          Press  <F5>to copy a vehicle record.  This  is  a  very
          useful  feature which comes in handy if you  have  more
          than one configuration of your vehicle or just wish  to
          experiment  with your combination.  You can  make  your
          experimental changes to the copy rather than disturbing
          the original.

          Press  <F6>  to  swap  two  vehicle  listings  in   the
          database.

          Press <F7> to print the all database listings for  your
          records.

          Press <F9>to delete a single vehicle record.

          Press <SHIFT> <F9>to delete a group of vehicle records.
          [BE CAREFUL!]

          Press  <ESC>  or <F8> to exit the vehicle database  and
          return to DRAGSTRIP PLUS.

          Press <ENTER> to page down through the database and see
          more vehicles (if any).


Vehicle Database Information

          The  following information will mainly  be  of  use  to
          those  users who are reasonably familiar with computers
          and DOS commands.

          DRAGSTRIP  PLUS stores your vehicle combinations  in  a
          disk  file in the current directory.  This file can  be
          distinguished from the other program files by its  file
          extension, ".DB".

          DRAGSTRIP PLUS' backup database file has a similar file
          extension, ".DBK".  Every time you enter a new  vehicle
          combination into DRAGSTRIP PLUS or make any changes  to
          an existing combination, the program saves your changes
          in  its (".DB") database file.  In contrast, the backup
          database file (".DBK") stores your combinations as they
          were originally BEFORE you made your latest changes.

          This  knowledge  can  be very  useful  at  times.   For
          example, if you delete a vehicle combination by mistake
          from  the database while running the program, there  is
          no  way  within DRAGSTRIP PLUS to get it back.  But  if
          you were to were to exit DRAGSTRIP PLUS to DOS, and use
          the DOS copy command to copy the contents of the backup
          database file to the actual database file, your deleted
          vehicle  combination (along with  the  rest)  would  be
          restored.

          Here's  an  additional tip to our most advanced  users:
          You  can  prevent  DRAGSTRIP PLUS from overwriting  the
          backup database file, if you have a need to, by setting
          the  DOS attribute flag of the backup database file  to
          "Read Only".  This way you could permanently preserve a
          given set of vehicle combinations.












Appendix  C
-----------






Vehicle Weights

         COMMON RACE WEIGHTS FOR VARIOUS STREET VEHICLES

                     VEHICLE                    WEIGHT
                     Camaro, '67-69              3200
                     Camaro, 70's-90's           3400
                     Challenger                  3400
                     Chevette, 8 cyl             2550
                     Chevy II Nova               3100
                     Corvette                    3400
                     Falcon                      3100
                     Fairlane                    3000
                     GMC Silverado truck         4000
                     Grand National Regal        3400
                     Gremlin                     3000
                     GT Mustang                  3250
                     Malibu                      3550
                     Mazda                       2800
                     Mini truck                  3400
                     Monte Carlo SS              3500
                     Nova                        3400
                     T-bucket                    2100
                     Trans Am                    3500
                     Vega                        2600
                     Ventura                     3600
                     Volkswagon Beetle           1800
          












Appendix  D
-----------






Parameter File and Ratings File Documentary

         (FOR ADVANCED USERS AND PROGRAMMERS ONLY)

          YOU CAN MAKE DRAGSTRIP PLUS DO WHATEVER YOU WANT IT TO!

          At initial start up, DRAGSTRIP PLUS looks for two files
          in   the   current  directory.   The  first  is  called
          "RACExxx.PRM",  and the second is named  "RACExxx.RTS".

          If  either  file is missing, or discovered  to  be  the
          wrong  file length or is otherwise corrupted, DRAGSTRIP
          PLUS  will  recreate the offending file with  a  direct
          copy  of  its own internal default values.   The  first
          file  will  hereafter be referred to as the  "parameter
          file",  while  the second will be termed  the  "ratings
          file".

          Both  files are text (ASCII) files that can  be  easily
          examined or changed by DRAGSTRIP PLUS users as desired.

          To  make changes in either file, use a text file editor
          such as MS-DOS's "EDIT" or "EDLIN", or a word processor
          such as Professional Write or Word Perfect to edit  the
          desired file.

          The  Ratings  File.  The ratings file can  be  used  to
          customize DRAGSTRIP PLUS'  E.T. and parts rating system
          to  fit  a  particular specialized application,  or  to
          merely suit the user's taste.

          For  example,  suppose  a  particular  user  constantly
          disagrees  with DRAGSTRIP PLUS'  exhaust valve  ratings
          (and  related messages) in the Advice screen,  thinking
          that  DRAGSTRIP PLUS always gives exhaust valve ratings
          that are too high.

          In  this  situation, DRAGSTRIP PLUS can  be  forced  to
          change  the  way  it rates all exhaust  valves  in  the
          future  by  editing the ratings file  and  finding  the
          following line:

          0      Exhaust valve

          By  changing  the "0" at the start of this  line  to  a
          negative  value, for example "-5", DRAGSTRIP PLUS  will
          lower its ratings of all future exhaust values by  this
          same  amount (-5).  This line would then appear in  the
          ratings file as follows:

          -5     Exhaust valve

          Of course, you can just as easily raise DRAGSTRIP PLUS'
          rating  scheme for any part by changing the "0" at  the
          start of the applicable line to a positive number, such
          as "5".

          CAUTION:  Do not add or delete any lines to the ratings
          file,  insert  extra  spaces in a  line,  or  edit  any
          portion  of a line other than the numbers at  the  left
          side  of the file, or change any rating (either  up  or
          down)  by  more  than 30 points (or more than  whatever
          value  is  stated  at the top of the file).   DRAGSTRIP
          PLUS  will  check the file for gross errors,  and  will
          simply  overwrite  the ratings file with  the  original
          data  if  you make a critical error.  You may then  try
          once again to modify the file to suit your application.
          This  process  may be repeated as often  as  necessary,
          until you get it right.

          However,  keep  in  mind that DRAGSTRIP  PLUS  is  most
          accurate  calculating  E.T.s  when  it  is  using   the
          original  ratings  file;  the  program  has  not   been
          seriously tested with other values, so results  may  be
          unpredictable.

          The  Parameter  File.   The  parameter  file  sets  the
          program's parameter ranges by specifying a high and low
          value  for  every  input value  in  the  program.   The
          experienced  user  can change this file,  in  order  to
          force  the  program  to allow a wider  range  of  input
          values in particular situations.

          For example, supposed that the driver of a certain race
          car  weighs 675 pounds. DRAGSTRIP PLUS normally rejects
          this  input  as  being  "out of  range".   But  if  the
          parameter file is changed, DRAGSTRIP PLUS will accept a
          675 pound driver without question.

          Here's an example: in DRAGSTRIP PLUS, the first three
          input values in the program are MPH, Gear, and Tire
          Height (diameter) respectively.  Examining the first
          three sets of numbers in the parameter file reveals the
          low and high ranges for each in the following form
          (actual values you see may differ):

          40        MPH
          310
          240       Gear
          840
          20        Tire Height
          44       
          and continuing etc...

          Note  that the lowest permissible value DRAGSTRIP  PLUS
          will  accept  for a given value always  appears  first,
          followed  on  the next line by its highest  permissible
          value.

          This  means 40 - 310 is the only acceptable  range  for
          MPH  input values, 2.40 to 8.40 is the valid Gear ratio
          input range, while 20 through 44 inches is the shortest
          and tallest tire heights allowed.

          By  examining  the parameter file, you will  be  easily
          able   to  find  the  high  and  low  parameter  values
          controlling  Driver's weight, 80 to 500  (pounds).   If
          you  change this latter figure to 675 and save the file
          (if you are using a word processor, be sure to save the
          file  in  "TEXT"  or  "ASCII"  format),  from  now   on
          DRAGSTRIP PLUS will accept up to 675 pounds as a  valid
          driver's  weight, until you either change the parameter
          file again or delete it.

          Note  that  some  sets of values in the parameter  file
          mean  nothing,  or  are reserved for  future  use,  and
          should  be ignored.  These are clearly labeled  in  the
          parameter file as "Misc" or "Not used".

          IMPORTANT:  You can change any values you like,  EXCEPT
          the  high-low  limits controlling values inputted  into
          the  program  via  a menu selection  process.   Certain
          selections,    such   as   "Tire   Type",   "Traction",
          "Manifold",  and "Head Type", are made by the  user  by
          selecting  the appropriate choice from a menu selection
          that  appears  during  program  execution.   Since  you
          cannot  make  more  menu selections appear  other  than
          those   displayed  (because  no  further  menu  choices
          exist),  DRAGSTRIP PLUS considers any  change  to  such
          parameter limits to be a fatal error, and will promptly
          overwrite your work with the original values  (no  harm
          done!).

          Furthermore, you may not delete or add any  parameters;
          when  you finish modifying the parameter file, it  must
          have the same number of low-value/ high-value parameter
          sets as it did originally.

          As  with  the ratings file, there is no need  to  worry
          about  making a mistake; DRAGSTRIP PLUS will check  the
          file  for  gross errors, and your work will  merely  be
          overwritten with the original values if a serious error
          is  discovered.  You may then attempt once more to  try
          and  modify  the  file to suit your application.   This
          process  may  be repeated as many times  as  necessary,
          until you get it right.

          Also  keep in mind that DRAGSTRIP PLUS is most accurate
          in  calculating  E.T.s when it is  using  its  original
          parameter  data;  the program has  not  been  seriously
          tested over wider parameter ranges, so the results  may
          be quite unpredictable.  Particularly this may be so if
          the  user modifies the MPH or Transmission Slip% ranges
          (and actually inputs data in this expanded range).

          CAUTION:   If  you  change  certain  parameter   limits
          associated  with the engine, such as "Engine  Size"  or
          "Carburetor  CFM",  this  can  have  a  radical  effect
          (usually  for the worse!) upon the E.T.s, MPHs,  and/or
          shift  points  of  every  subsequent  vehicle  that  is
          displayed,  even  previously  saved  "tried  and  true"
          combinations loaded from the program's database.

          Changing  the  limits for other engine values  such  as
          "Intake  Valve  Size", may shift the  program's  rating
          system  for  that part (while correspondingly  changing
          the  range of any values you input, of course).  If you
          find  this  ratings  change  undesirable,  change   the
          ratings  file  (as  described  previously)  until   you
          correct the undesirable part rating shift.

          The  exact effects that result from changing any  given
          value  in the parameter file will not be documented  in
          detail  here, because these effects change from version
          to   version   of   DRAGSTRIP   PLUS   as   programming
          improvements  are  made.  You will have  to  gain  this
          knowledge  on  your  own, through  experimentation  and
          close observation.

          If you modify the parameter and/or the ratings files in
          any   way,  DRAGSTRIP  PLUS  will  display  appropriate
          message(s)  on  the  "E.T.  RESULTS"  screen   advising
          caution  against  blindly trusting the  program's  E.T.
          results.

          If  you  wish to erase this message, or want to restore
          the   parameter  file  and/or  ratings  file  to  their
          original state, simply delete the applicable file.  The
          next  time you run DRAGSTRIP PLUS, the deleted  file(s)
          will  automatically be recreated (in whatever directory
          is current at the time) in their original form, and the
          caution  message at the "E.T. RESULTS" screen  will  no
          longer  appear  (be  careful not to  delete  any  other
          DRAGSTRIP  PLUS program files other than the  parameter
          and/or ratings files).
          












Appendix  E
-----------






Setting Your Dial-In
          In the section titled "Introducing DRAGSTRIP PLUS", the
          technique  of using DRAGSTRIP PLUS to set your  bracket
          racing "dial-in" was mentioned briefly.
          
          Here's how to do this: Example:
          If you get to the track late and don't have enough time
          for  a trial run before bracket racing starts, you  can
          use DRAGSTRIP PLUS to set your dial in, based upon your
          dial-in of the previous week.  Here's how:  Suppose the
          last  time you raced the particular track you raced  on
          was at an elevation of 785 feet, at an air pressure  of
          29.95,  an  air temperature of 70 degrees,  a  relative
          humidity of 45%, and your dial-in was 11.90.

          First  enter  your  combination  into  DRAGSTRIP   PLUS
          exactly as it was the last time your raced it.  Suppose
          DRAGSTRIP  PLUS predicts your E.T. to have been  11.77,
          which  is  slightly faster than its actual  performance
          but within the program's tolerance range.

          Now  make changes as necessary to suit the new  track's
          conditions: elevation 120 feet, air pressure 30.15, air
          temperature of 78 degrees, relative humidity 75%.
          (TIP: use the database COPY function to make a copy  of
          the  original combination, if you wish to preserve  the
          original combination unchanged).

          Now  suppose DRAGSTRIP PLUS predicts your  E.T.  to  be
          11.48.  Since DRAGSTRIP PLUS was too fast last week  by
          .200  second, assume it will be too fast this  week  by
          .200  second  again  and add this same  amount  to  its
          current prediction of 11.48, thereby arriving at 11.68.
          Your  dial-in  for the new track would then  be  11.68,
          down from the 11.90 the week before.












Appendix  F
-----------






Upcoming New Products

          Revolutionary  Concepts, Inc. is firmly  committed  to
          the  continued evolution and improvement of  DRAGSTRIP
          PLUS.   Meanwhile,  Revolutionary  Concepts'  powerful
          professional  version  of  DRAGSTRIP  PLUS,   entitled
          "DRAGSTRIP  PLUS  PROFESSIONAL",  is  currently  under
          development and slated for release in mid 1996.

          DRAGSTRIP PLUS PROFESSIONAL will store 1,000  vehicles
          instead of 100, include sophisticated vehicle database
          sort and query capabilities, include a library of over
          1,000 popular camshafts, generate charts and graphics,
          and analyze more data than ever before.

          DRAGSTRIP PLUS PROFESSIONAL will require a hard drive,
          VGA  monitor, and 640K or more of RAM memory.   It  is
          expected that DRAGSTRIP PLUS PROFESSIONAL will  retail
          substantially above the price of DRAGSTRIP PLUS.

          For    more    information   about   DRAGSTRIP    PLUS
          PROFESSIONAL,  or  to  obtain the  latest  version  of
          DRAGSTRIP PLUS, please write or call:
          
                  Revolutionary Concepts, Inc.
                  P.O. Box 690048
                  Houston, Texas  77269-0048
                  Phone (713) 859-RACE  
          
          Contact us via e-mail for problems, lastest information 
          or just to trade ideas at:
          
                  dragplus@rconcepts.com
          
                                
