1968 Pontiac GTO/Tempest Engine Identification Codes
|
Year
|
Code
|
C.I.D.
|
Carb
|
Trans
|
HP@RPM
|
Torque@RPM
|
Bore/ Stroke
|
Comp. Ratio
|
| 1968
| ZK
| 250
| 1bbl
| MT
| 175 @ 4800
| 240 @ 2600
| 3.88 x 3.53
| 9.0:1
|
|
| ZN
| 250
| 1bbl
| AT
| 175 @ 4800
| 240 @ 2600
| 3.88 x 3.53
| 9.0:1
|
|
| ZO
| 250
| 4bbl
| MT
| 215 @ 5200
| 255 @ 3800
| 3.88 x 3.53
| 10.5:1
|
|
| ZE
| 250
| 4bbl
| AT
| 215 @ 5200
| 255 @ 3800
| 3.88 x 3.53
| 10.5:1
|
|
| WD
| 350
| 2bbl
| MT
| 265 @ 4600
| 355 @ 2800
| 3.88 x 3.75
| 9.2:1
|
|
| YN
| 350
| 2bbl
| AT
| 265 @ 4600
| 355 @ 2800
| 3.88 x 3.75
| 9.2:1
|
|
| WR
| 350
| 4bbl
| MT
| 320 @ 5100
| 380 @ 3200
| 3.88 x 3.75
| 10.5:1
|
|
| YP
| 350
| 4bbl
| AT
| 320 @ 5100
| 380 @ 3200
| 3.88 x 3.75
| 10.5:1
|
|
| XM
| 400
| 2bbl
| AT
| 265 @ 4500
| 397 @ 2400
| 4.12 x 3.75
| 8.6:1
|
| H.O.
| WT
| 400
| 4bbl
| MT
| 360 @ 5100
| 445 @ 3600
| 4.12 x 3.75
| 10.75:1
|
|
| YS
| 400
| 4bbl
| AT
| 350 @ ?
| ?
| 4.12 x 3.75
| 10.75:1
|
| H.O.
| WS
| 400
| 4bbl
| MT
| 360 @ 5100
| 445 @ 3600
| 4.12 x 3.75
| 10.75:1
|
|
| YZ
| 400
| 4bbl
| AT
| 350 @ ?
| ?
| 4.12 x 3.75
| 10.75:1
|
| RA
| XS
| 400
| 4bbl
| MT
| 360 @ 5400
| 445 @ 3600
| 4.12 x 3.75
| 10.75:1
|
| RA
| XP
| 400
| 4bbl
| AT
| 360 @ 5400
| 445 @ 3600
| 4.12 x 3.75
| 10.75:1
|
