| engine type | Original performance | Performance after tuning | Vmax | More efficient | price |
|---|---|---|---|---|---|
| 5.3 V8 | 224 kW (304 hp) 450Nm | 245 kW (334 hp) 480Nm | * | 30 hp | 799 |
| 6.0 | 294 kW (400 hp) 543Nm | 318 kW (433 hp) 580Nm | * | 33 hp | 799 |
| LS2 | 287 kW (390 hp) 548Nm | 310 kW (422 hp) 585Nm | * | 32 hp | 799 |