Oldsmobile Rocket Diesel specs: 4.00 x 3.50 in (101.6 x 88.9 mm) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 350 ci |
|---|---|
| Cylinders | 8 |
| Bore | 4.000" |
| Stroke | 3.500" |
| Compression | 22.5:1 |
| Advertised power | 120 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| LF9 | 350 ci | 4" × 3.5" | 22.5:1 | 120 |
This family is represented by a single engine in the database: 350 ci, 8 cylinders, a 4" × 3.5" 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.