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The Ilmor MV8-6.2L OPS engine is available for both inboard (V-drive and direct drive) as well as sterndrive applications. 


The Ilmor MV8 Ocean Performance Series (OPS) engines are designed for salt-water use or other closed cooled applications. Available in all three displacement variants, OPS engines provide superior temperature control compared to an open cooled system and enhance catalyst performance through temperature control. The OPS engines also ensure fuel and spark optimization throughout the engines' operating range. Finally, OPS engines offer full system corrosion protection and utilize environmentally friendly coolant.



Number of Cylinders8


Power Rating321 kW @ 5400 RPM (430 HP)

Peak Torque445 ft-lbs @ 4400 RPM

Compression Ratio10.7:1

Valve ConfigurationOverhead Valves (2 per cylinder)

Valve LiftersHydraulic Roller

Firing Order1-8-7-2-6-5-4-3

Bore and Stroke103.25 x 92.00 mm

Bore Center111.76 mm

Engine Weight

1026 lbs / 466 kg (with V-Drive transmission)

813 lbs / 369 kg (sterndrive bobtail) 

Emissions ControlsCatalyst. 02 Sensor. ECU Controlled. OBD-M


Cylinder BlockCast Aluminum

Cylinder HeadCast Aluminum

Intake ManifoldCast Aluminum Upper and Lower

Exhaust ManifoldCast Iron

CrankshaftCast Iron with Undercut and Rolled Fillets

Connecting RodsForged Powdered Metal