Buick Big Block V8 specs: 4.313 x 3.90 in (109.5 x 99.1 mm) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 455 ci |
|---|---|
| Cylinders | 8 |
| Bore | 4.313" |
| Stroke | 3.900" |
| Compression | 10.0:1 |
| Advertised power | 350 hp |
| Cylinder head data | 1 of 1 engines |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 455 | 455 ci | 4.3125" × 3.9" | 10:1 | 350 |
This family is represented by a single engine in the database: 455 ci, 8 cylinders, a 4.3125" × 3.9" 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.