Vortec 8100 8.1L / 496 engine HO525 Marine Engine Kit

Our stage 1 marine performance package bumps the 496 / 8.1L to 540 horsepower & 600 ft-lbs of torque.

• BigPower Aluminum Cylinder Heads
• BP-203 Street / Strip Camshaft
• GEN7R Aluminum Intake Manifold
• 90MM Marine Cable Throttle Body
• 1.7 Ratio SS Roller Rockers & AFN nuts
• ARP Re-torqueable High Strength Head Bolt Kit (Custom)
• Cometic MLS Head Gasket Set (4.25 Bore custom size)