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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
These Speedmaster alternator brackets are constructed from billet aluminum for durability and can be used with several different alternators
to maintain accurate valvetrain adjustment
Your street rod or show car deserves the very best
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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