1.370" Od. 0.760" Id. 0.040" Thick Hardened Steel Valve Spring Cups Springs These scoops give you that

These scoops give you that classic Hilborn-style look with a polished aluminum body

Speedmaster billet ball-milled rear view mirrors are a beautiful

Speedmaster HPC ignition coils are designed for high-rpm

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

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

1.370" Od. 0.760" Id. 0.040" Thick Hardened Steel Valve Spring Cups Springs These scoops give you thatAs 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.