Pontiac 97ci specs: 3.228 x 2.98 in (82 x 75.7 mm) bore and stroke. Displacement, compression and factory ratings for each, plus rod ratio and piston speed.
| Displacement | 97 ci |
|---|---|
| Cylinders | 4 |
| Bore | 3.228" |
| Stroke | 2.980" |
| Compression | 9.6:1 |
| Advertised power | 62–65 hp |
| Years | 1982–1983 |
| Cylinder head data | 1 of 1 engines |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Pontiac 97ci · 3.228" × 2.98" · 9.64:1 | 97 ci | 3.228" × 2.98" | 9.64:1 | 62–65 |
This family is represented by a single engine in the database: 97 ci, 4 cylinders, a 3.228" × 2.98" bore and stroke.
All are oversquare — bore larger than stroke, which favours revs over low-end torque.
Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.