Pontiac 260ci specs: 3.50 x 3.385 in (88.9 x 86 mm) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 260 ci |
|---|---|
| Cylinders | 8 |
| Bore | 3.500" |
| Stroke | 3.385" |
| Compression | 9.2:1 |
| Advertised power | 110 hp |
| Years | 1975–1976 |
| Cylinder head data | 1 of 2 engines |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| Pontiac 260ci (1975) · 110 hp | 260 ci | 3.5" × 3.385" | 9.201:1 | 110 |
| Pontiac 260ci (1976) | 260 ci | 3.5" × 3.385" | — | 110 |
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.