1.370" Od. 0.760" Id. 0.040" Thick Hardened Steel Valve Spring Cups Springs These Speedmaster engine stands are

These Speedmaster engine stands are constructed from high-quality steel tubing

Speedmaster Input shafts can withstand the stresses and the added power

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

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

Billet servo covers are available in different finishes

1.370" Od. 0.760" Id. 0.040" Thick Hardened Steel Valve Spring Cups Springs These Speedmaster engine stands areAs 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.