Manley Severe Duty Intake Valve - 2.190 in Head - 0.372 in Valve Stem - 5.218 in Long - Big Block Chevy - Set of 8 CS-5P-EXT-5 Helix bottom correctly positions 5"

Helix bottom correctly positions 5" or 5-1/2" conventional spring for proper performance

Tapered inner diameter of tool compresses piston rings to proper bore size

600 in Square Port

Engine plates are used to replace the front engine mounts allowing relocation of the engine in the chassis

Manley Severe Duty Intake Valve - 2.190 in Head - 0.372 in Valve Stem - 5.218 in Long - Big Block Chevy - Set of 8 CS-5P-EXT-5 Helix bottom correctly positions 5"Product Description: Intake Valve Severe Duty 2. 190 in Head 0. 372 in Valve Stem 5. 218 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