Isuzu 171ci specs: 89 x 76 mm (3.5039 x 2.9921 in) bore and stroke. Displacement, compression and factory ratings for each, plus rod ratio and piston speed.
| Displacement | 171 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.504" |
| Stroke | 2.992" |
| Years | 1989–1991 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| GM 2.8 V6 | 171 ci | 3.5039" × 2.9921" | — | — |
This family is represented by a single engine in the database: 171 ci, 6 cylinders, a 3.5039" × 2.9921" 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.