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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
The Speedmaster throttle body begins as a billet of 6061- T6 aluminum for superior quality and is introduced to a state-of-the-art CNC machine
Your street rod or show car deserves the very best
it will be stated with the part
They are quality-manufactured from stainless steel and are available in 18 to 80 oz
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1.263" Od. 0.510" Id. 0.041" Thick Hardened Steel Valve Spring Seat LS1 The Speedmaster throttle body beginsAs 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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