Bore, stroke, displacement and compression for all 7 Pontiac Pontiac 305ci engines. Compare variants side by side.
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Ponti 1977 305 145HP | 305 ci | 3.736" × 3.484" | 9.241:1 | 145 |
| Ponti 1985 305 155HP | 305 ci | 3.736" × 3.484" | 9.901:1 | 155 |
| Pontiac 305ci · 3.736" × 3.484" · 11.051:1 | 305 ci | 3.736" × 3.484" | 11.051:1 | 150–190 |
| Ponti 1986 305 210HP | 305 ci | 3.736" × 3.484" | 11.1:1 | 210 |
| Pontiac 305ci · 3.736" × 3.484" · 11.38:1 | 305 ci | 3.736" × 3.484" | 11.38:1 | 170 |
| Pontiac 305ci · 3.736" × 3.484" · 10.49:1 | 305 ci | 3.736" × 3.484" | 10.49:1 | 190–220 |
| Pontiac 305ci · 3.736" × 3.484" · 10.35:1 | 305 ci | 3.736" × 3.484" | 10.35:1 | 205–230 |