GMC LML, Engine
| Engine capacity | 6,587 cm³ |
| Maximum power (range), hp | 397 |
| Maximum torque, N*m (kg*m) at rpm. | 1,037 (106) / 1600 |
| Fuel used | Diesel fuel |
| Engine type | V-shaped, 8-cylinder |
| Maximum power, hp (kW) at rpm | 397 (292) / 3000 |
| Supercharger | Turbine |
| Number of valves per cylinder (range) | 4 |