1.640" Od .710" Id .040" Thick Hardened Steel Valve Spring Cups Ps8005 Springs Designed for precision fitment and

Designed for precision fitment and easy installation

Size Notes: Flange to Inside - 14 1/2" Flange to Outside - 20" Flange to End of Pipe - 38"

self-service-able to easily change your stall speed right at home

There's no better way to top off your street machine than with one of our PCEHilborn-Style hood scoops

1.640" Od .710" Id .040" Thick Hardened Steel Valve Spring Cups Ps8005 Springs Designed for precision fitment andAs with all other parts in the valvetrain, the area where the spring sits takes a beating. The old standard shims simply will not hold up to the extreme pressures and high rpm found in today's performance engines. Speedmaster offers this set of valve spring shims to solve this problem and eliminate failures.