GMC 292ci specs: 3.875 x 4.125 in (98.4 x 104.8 mm) bore and stroke. Displacement, compression and factory ratings for each, plus rod ratio and piston speed.
| Displacement | 292 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.875" |
| Stroke | 4.125" |
| Compression | 8.0:1 |
| Advertised power | 170 hp |
| Years | 1967–1971 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| GMC 292ci (1967–1971) | 292 ci | 3.875" × 4.125" | 8:1 | 170 |
This family is represented by a single engine in the database: 292 ci, 6 cylinders, a 3.875" × 4.125" 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.