1964 Pontiac GTO/Tempest Engine Identification Codes
|
Year
|
Code
|
C.I.D.
|
Carb
|
Trans
|
HP@RPM
|
Torque@RPM
|
Bore/ Stroke
|
Comp. Ratio
|
| 1964 GTO
| 76X
| 389
| 3-2bbl
| MT 3spd
| 348 @ 4900
| 428 @ 3600
| 4.09 x 3.75
| 10.75:1
|
| GTO
| 77J
| 389
| 3-2bbl
| AT
| 348 @ 4900
| 428 @ 3600
| 4.09 x 3.75
| 10.75:1
|
| GTO
| 78X
| 389
| 4bbl
| AT
| 325 @ 4800
| 428 @ 3200
| 4.09 x 3.75
| 10.75:1
|
| GTO
| 79J
| 389
| 4bbl
| AT
| 325 @ 4800
| 428 @ 3200
| 4.09 x 3.75
| 10.75:1
|
|
| 80Z
| 215
| 1bbl
| MT 3spd
| 140 @ 4200
| 206 @ 2000
| 3.75 x 3.25
| 8.6:1
|
|
| 81Z
| 215
| 1bbl
| MT 3spd
| 140 @ 4200
| 206 @ 2000
| 3.75 x 3.25
| 8.6:1
|
|
| 84Z
| 215
| 1bbl
| MT 3spd
| 140 @ 4200
| 206 @ 2000
| 3.75 x 3.25
| 8.6:1
|
|
| 85Z
| 215
| 1bbl
| MT 3spd
| 140 @ 4200
| 206 @ 2000
| 3.75 x 3.25
| 8.6:1
|
|
| 88Y
| 215
| 1bbl
| AT
| 140 @ 4200
| 206 @ 2000
| 3.75 x 3.25
| 8.6:1
|
|
| 925
| 326
| 2bbl
| MT 3spd
| 250 @ 4600
| 333 @ 2800
| 3.72 x 3.75
| 8.6:1
|
|
| 945
| 326
| 4bbl
| MT 3spd
| 280 @ 4800
| 355 @ 3200
| 3.72 x 3.75
| 10.5:1
|
|
| 960
| 326
| 2bbl
| AT
| 250 @ 4600
| 333 @ 2800
| 3.72 x 3.75
| 8.6:1
|
|
| 971
| 326
| 4bbl
| AT
| 280 @ 4800
| 355 @ 3200
| 3.72 x 3.75
| 10.5:1
|
