Plymouth Hemi specs: 4.252 x 3.752 in (108 x 95.3 mm) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 426 ci |
|---|---|
| Cylinders | 8 |
| Bore | 4.252" |
| Stroke | 3.752" |
| Compression | 10.3:1 |
| Advertised power | 425 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 426 Hemi V8 | 426 ci | 4.252" × 3.752" | 10.25:1 | 425 |
This family is represented by a single engine in the database: 426 ci, 8 cylinders, a 4.252" × 3.752" 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.