Oldsmobile 252ci specs: 3.965 x 3.40 in (100.7 x 86.4 mm) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings.
| Displacement | 252 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.965" |
| Stroke | 3.400" |
| Compression | 9.4:1 |
| Advertised power | 125 hp |
| Years | 1982–1984 |
| Cylinder head data | 1 of 2 engines |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Oldsmobile 252ci (1982) · 125 hp | 252 ci | 3.965" × 3.4" | 9.391:1 | 125 |
| LC4 | 252 ci | 3.965" × 3.4" | — | 125 |
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.