Bore, stroke, displacement and compression for all 5 GMC Big Block Chevy engines. Compare variants side by side.
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 502 | 502 ci | 4.4201" × 4" | 9.6:1 | 338 |
| 454 | 454 ci | 4.25" × 4" | 8:1 | 230 |
| 427 | 427 ci | 4.25" × 3.6402" | 11:1 | 335 |
| 402 | 402 ci | 4.2008" × 3.7" | 8.5:1 | 240 |
| 396 | 396 ci | 4.0937" × 4.0937" | 10.25:1 | 325 |