Porsche EA839 specs: 84.5 x 86 mm (3.3268 x 3.3858 in) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings.
| Displacement | 176.4–176.5 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.327" |
| Stroke | 3.386" |
| Compression | 10.5:1 |
| Advertised power | 440 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| DGR | 176.5 ci | 3.3268" × 3.3858" | 10.5:1 | 440 |
| DGR | 176.4 ci | 3.3268" × 3.3858" | 10.5:1 | 440 |
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.