FOR SALE Mercruiser 496 Mercury 8.1 Mag Engine. This engine excellent condition and great runs, come with 650 HOURS usage.

The MerCruiser 496 Magnum (8.1L) V8 is one of the most reliable and powerful big-block marine engines ever produced. Sourced from the GM Vortec 8100 platform and heavily marine.

Specification 496 MAG

• Propshaft Horsepower : 375 HP (280 kW)
• Wide Open Throttle (WOT) RPM : 4400 – 4800 RPM
• Idle RPM (in Neutral) 650 RPM
• Oil Pressure @ 2000 RPM 60 psi (414 kPa)
• Oil Pressure @ Idle 30 psi (207 kPa)

Block & Internal Geometry

• Displacement : 496 cubic inches / 8.1 Liters
• Engine Type : V8 Big Block (GM Vortec base)
• Bore & Stroke : 4.25 X 4.37 in (108 mm X 111 mm)
• Compression Ratio : 9.1:1
• Valvetrain : Roller lifter / roller rocker arm setup with a billet steel camshaft.
• Firing Order : 1-8-7-2-6-5-4-3