1970 Pontiac GTO/Tempest Engine Identification Codes
|
Year
|
Code
|
C.I.D.
|
Carb
|
Trans
|
HP@RPM
|
Torque@RPM
|
Bore/ Stroke
|
Comp. Ratio
|
| 1970
| ZB
| 250
| 1bbl
| MT
| 155 @ 4200
| 235 @ 1600
| 3.87 x 3.53
| 8.5:1
|
|
| ZG
| 250
| 1bbl
| AT
| 155 @ 4200
| 235 @ 1600
| 3.87 x 3.53
| 8.5:1
|
|
| WU
| 350
| 2bbl
| MT
| 255 @ 4600
| 355 @ 2800
| 3.88 x 3.75
| 8.8:1
|
|
| YU
| 350
| 2bbl
| AT
| 255 @ 4600
| 355 @ 2800
| 3.88 x 3.75
| 8.8:1
|
| RA III
| WS
| 400
| 4bbl
| MT
| 366 @ ?
| ?
| 4.12 x 3.75
| 10.5:1
|
|
| WT
| 400
| 4bbl
| MT
| 350 @ ?
| ?
| 4.12 x 3.75
| 10.25:1
|
| RA IV
| WW
| 400
| 4bbl
| MT
| 370 @ 5500
| 455 @ 3900
| 4.12 x 3.75
| 10.5:1
|
| RA IV
| XP
| 400
| 4bbl
| AT
| 370 @ 5500
| 455 @ 3900
| 4.12 x 3.75
| 10.5:1
|
|
| XX
| 400
| 2bbl
| AT
| 265 @ 4600
| 397 @ 2400
| 4.12 x 3.75
| 8.8:1
|
|
| XV
| 400
| 4bbl
| AT
| 330 @ 4800
| 445 @ 2900
| 4.12 x 3.75
| 10:1
|
|
| YS
| 400
| 4bbl
| AT
| 350 @ 5000
| 445 @ 3600
| 4.12 x 3.75
| 10.25:1
|
| RA III
| YZ
| 400
| 4bbl
| AT
| 366 @ ?
| ?
| 4.12 x 3.75
| 10.5:1
|
|
| WA
| 455
| 4bbl
| MT
| 370 @ ?
| ?
| 4.15 x 4.21
| 10.25:1
|
|
| YC
| 455
| 4bbl
| AT
| 370 @ ?
| ?
| 4.15 x 4.21
| 10.25:1
|
