Buick GM Vortec LL8, Engine
| Engine capacity | 4,157 cm³ |
| Maximum power (range), hp | 270 - 291 |
| Maximum torque, N*m (kg*m) at rpm. | 373 (38) / 3600 |
| Fuel used | Gasoline AI-92 |
| Fuel consumption, l/100 km | 13.8 - 15.7 |
| Engine type | In-line, 6-cylinder |
| Additional engine information | SFI |
| Maximum power, hp (kW) at rpm | 270 (199) / 6000 |
| Compression Ratio (Range) | 10.3 |
| Cylinder diameter (range), mm | 93 |
| Piston stroke (range), mm | 102 |
| CO₂ emissions (range), g/km | 310 |
| Cooling system (range), l | 13.1 |
| Engine lubrication system (range), l | 6.6 |
| Valve drive | DOHC |
| Number of valves per cylinder (range) | 4 |