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and longevity
Injectors come complete and ready for installation with precision molded o-rings and fine-mesh fuel strainers
The Speedmaster GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited
as well as 1/3 smaller
1.550" Od. 0.567" Id. 0.060" Thick Hardened Steel Valve Spring Seat Springs and longevityAs 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.
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