Bore, stroke, displacement and compression for all 4 Pontiac Pontiac 138ci engines. Compare variants side by side.
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Ponti 1988 138 150HP | 138 ci | 3.625" × 3.35" | 10.45:1 | 150 |
| Ponti 1989 138 150HP | 138 ci | 3.625" × 3.35" | 11:1 | 150 |
| Ponti 1992 138 120HP | 138 ci | 3.625" × 3.35" | 9.5:1 | 120 |
| Pontiac 138ci · 3.625" × 3.350" · 11.9:1 | 138 ci | 3.625" × 3.35" | 11.9:1 | 160–180 |