1.560" Od. 0.567" Id. 0.040" Thick Hardened Steel Valve Spring Cups Springs Throttle linkage kits make your

Throttle linkage kits make your carb installation look clean and professional

Leaks can lead to the death of your rear end

Speedmaster underdrive pulley kits are built from aircraft-quality material andcomputer-machined

These headers are designed with 5/16 in

it has a square bore carb flange instead of a spread bore

1.560" Od. 0.567" Id. 0.040" Thick Hardened Steel Valve Spring Cups Springs Throttle linkage kits make 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.