Porsche 930 specs: 95 x 70.4 mm (3.7402 x 2.7717 in) bore and stroke, shared by all 6 versions. Displacement, compression and factory ratings, plus rod ratio.
| Displacement | 182.6 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.740" |
| Stroke | 2.772" |
| Compression | 6.5–8.5:1 |
| Advertised power | 172–260 hp |
| Years | 1976–1983 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| 930/50 | 182.6 ci | 3.7402" × 2.7717" | 6.5:1 | 260 |
| 930/03 | 182.6 ci | 3.7402" × 2.7717" | 8.5:1 | 180 |
| 930/51, 930/53 | 182.6 ci | 3.7402" × 2.7717" | — | 234 |
| 930/04, 930/06 | 182.6 ci | 3.7402" × 2.7717" | — | 172 |
| 930/07 | 182.6 ci | 3.7402" × 2.7717" | — | 172 |
| 930/16 | 182.6 ci | 3.7402" × 2.7717" | — | 172 |
Compression spans 6.5:1 to 8.5:1, so fuel requirements differ meaningfully between members — worth checking before assuming parts interchange.
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.