| Specifications: | |
| Base Engine | General Motors¹ Duramax 6600 |
| Engine Displacement | 403 in3 [6.6 L] |
| Number of Cylinders | 8 |
| Rated Speed | 3500 rpm |
| Rated Power | 350-550 hp [261-410 kW] |
| Fuel System | Bosch common rail, direct injection |
| Engine Management | Banks OttoMind®/Bosch EDC16 |
| Aspiration | Twin turbocharged, seawater after-cooled |
| Flywheel Housing | SAE #3 |
| Electrical System | 12V |
| Cooling System | Closed cooling, belt driven seawater pump |
| Exhaust System | Water-cooled manifolds and risers |
| Turbochargers | Water-cooled turbine housings |
| Lube Oil System | Gear driven wet sump |
| Duty Cycle | Various ratings available |