1.370" Od. 0.760" Id. 0.040" Thick Hardened Steel Valve Spring Cups Springs Speedmaster flexplates will withstand the

Speedmaster flexplates will withstand the extreme power and rpm of today's engines

Speedmaster HPC ignition coils are designed for high-rpm

Speedmaster 8000 distributors yield stable timing and spark delivery at any RPM

Their improved seal design will conserve pump volume

1.370" Od. 0.760" Id. 0.040" Thick Hardened Steel Valve Spring Cups Springs Speedmaster flexplates will withstand theAs 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.