GMC 3.0L Duramax I6 Diesel specs: 3.307 x 3.543 in (84 x 90 mm) bore and stroke. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 182 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.307" |
| Stroke | 3.543" |
| Compression | 15.0:1 |
| Advertised power | 277–305 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 3.0L Duramax I6 Diesel · 3.307" × 3.543" · 15:1 | 182 ci | 3.3071" × 3.5433" | 15:1 | 277–305 |
This family is represented by a single engine in the database: 182 ci, 6 cylinders, a 3.3071" × 3.5433" 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.