Manley Severe Duty Exhaust Valve - 1.880 in Head - 0.342 in Valve Stem - 5.522 in Long - Big Block Chevy 11845-1 M592 125 higher than stock (this

125 higher than stock (this rarely affects header or chassis fitment)

BMT 235/249 HRlr LSThe COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development

1 in Square Tube

Maximum pressure is 14 PSI

Formula & Sports Racer Wedge

Manley Severe Duty Exhaust Valve - 1.880 in Head - 0.342 in Valve Stem - 5.522 in Long - Big Block Chevy 11845-1 M592 125 higher than stock (thisProduct Description: Exhaust Valve Severe Duty 1. 880 in Head 0. 342 in Valve Stem 5. 522 in Long Stainless Big Block Chevy Sold Individually 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