1.640" Od .710" Id .040" Thick Hardened Steel Valve Spring Cups Ps8005 Springs self-service-able to easily change your

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

These drives fit under your stock timing cover and come complete with instructions

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

Get genuine Speedmaster stainless steel valves

Speedmaster safety loops surround the driveshaft with a heavy-gauge steel cage that restrains the shaft after a failure

1.640" Od .710" Id .040" Thick Hardened Steel Valve Spring Cups Ps8005 Springs self-service-able to easily change yourAs 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.