Manley Extreme Duty Exhaust Valve - 1.880 in Head - 0.372 in Valve Stem - 5.354 in Long - Big Block Chevy - Set of 8 BR20001 For Big Block Chevy with

For Big Block Chevy with enlarged lifter bores

relocation of the oil filter may be required to provide header tube clearance

Blue Iridium

Fits all 2015 and newer S550 Mustangs

The Holley EFI Digital Dash is completely customizable with a variety of gauge and indicator screens that can be programmed to display any parameter you need

Manley Extreme Duty Exhaust Valve - 1.880 in Head - 0.372 in Valve Stem - 5.354 in Long - Big Block Chevy - Set of 8 BR20001 For Big Block Chevy withProduct 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