Genesis Lambda II specs: 92 x 83.8 mm (3.6220 x 3.2992 in) bore and stroke, shared by all 2 versions. Displacement, compression and factory ratings.
| Displacement | 204.3 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.622" |
| Stroke | 3.299" |
| Compression | 10.0–11.5:1 |
| Advertised power | 282–365 hp |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| G6DP | 204.3 ci | 3.622" × 3.2992" | 11.5:1 | 282 |
| G6DQ | 204.3 ci | 3.622" × 3.2992" | 10:1 | 365 |
Compression spans 10:1 to 11.5:1, 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.