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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
it will be stated with the part
to maintain accurate valvetrain adjustment
Upgrade your GM Powerglide or TH400 for extreme horsepower applications with this big shaft stator tube kit
Speedmaster billet main caps improve reliability in highly stressed engines by reducing distortion of the main bearing bores
These Performance Automatic hardened input shafts are custom-forged from 9310 non-twist steel
1.263" Od. 0.510" Id. 0.041" Thick Hardened Steel Valve Spring Seat LS1 it will be stated withAs 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.
