Manley Extreme Duty Exhaust Valve - 1.880 in Head - 0.372 in Valve Stem - 5.354 in Long - Big Block Chevy - Set of 8 Frostbite Cooling 4-1/4 in outer Diameter

4-1/4 in outer Diameter

Vehicle Applications: FORD EXPLORER 11-19

GMC: K2500 99 - 00 5

Simply utilize one of three conversion kits (sold separately) to match the operating range required of your engine

Use for initial 15-20 dyno pulls or 50-100 road milesVP Racing Fuels make some of the best Motorsports Containers in the business

Manley Extreme Duty Exhaust Valve - 1.880 in Head - 0.372 in Valve Stem - 5.354 in Long - Big Block Chevy - Set of 8 Frostbite Cooling 4-1/4 in outer DiameterProduct Description: Exhaust Valve Extreme Duty 1. 880 in Head 0. 372 in Valve Stem 5. 354 in Long Stainless Big Block Chevy Set of 8 Manley Performance high performance and racing engine parts have been powering winners since 1966. Since our inception in March 1966, Manley Performance Products has been at the forefront of the high performance automotive industry. Founded by gearhead Hank Manley shortly after his graduation from Brown University, our