Kuvaus

.500″ valve lift. Bolt-in. good torque. 74″ to 89″ with 9:1 to 10.5:1CR and 89″ to 100″ with less than 9.5:1CR. Used with solid or hydraulic lifters with adjustable pushrods. Clearance checks recommended. Note: Stock 86-03 XL valve springs are okay to .510″ valve lift.86-90 XL(NU)