1.370" Od. 0.760" Id. 0.040" Thick Hardened Steel Valve Spring Cups Springs Speedmaster Input shafts can withstand

Speedmaster Input shafts can withstand the stresses and the added power

This TH400 7075-T6 Billet Aluminum Direct Drum is manufactured specifically for drag racing

Speedmaster now offers gaskets for all of the popular applications

Billet servo covers are available in different finishes

especially if you frequently have to remove and reinstall the valve covers

1.370" Od. 0.760" Id. 0.040" Thick Hardened Steel Valve Spring Cups Springs Speedmaster Input shafts can withstandAs 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.