1.550" Od. 0.567" Id. 0.060" Thick Hardened Steel Valve Spring Seat Springs Speedmaster Fabricated Aluminum Valve Covers

Speedmaster Fabricated Aluminum Valve Covers are made form high grade aluminum and include billet rails which provides an excellent seal and strength to any performance engine

The throttle body flange accepts up to a 100mm throttle body

with the performance and durability required to reach the winner's circle

designed to be used with aftermarket intakes only

Whether you're rebuilding a stock engine or changing to valve springs that have more seat pressure

1.550" Od. 0.567" Id. 0.060" Thick Hardened Steel Valve Spring Seat Springs Speedmaster Fabricated Aluminum Valve CoversAs 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.