Hudson 254ci specs: 3.00 x 4.50 in (76.2 x 114.3 mm) bore and stroke. Displacement, compression and factory ratings for each, plus rod ratio and piston speed.
| Displacement | 254 ci |
|---|---|
| Cylinders | 8 |
| Bore | 3.000" |
| Stroke | 4.500" |
| Advertised power | 128 hp |
| Years | 1948–1952 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Hudson 254ci (1948–1952) | 254 ci | 3" × 4.5" | — | 128 |
This family is represented by a single engine in the database: 254 ci, 8 cylinders, a 3" × 4.5" bore and stroke.
All are undersquare — stroke larger than bore, favouring torque low in the range.
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.