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keeping your pulleys looking great for many years to come
The Speedmaster shift selector shaft uses an O-ring to prevent leakage from GM TH400 cases
and they may be reduced to fit if you decide to narrow your rear-end later on
All Speedmaster 23deg
Speedmaster machined aluminum water pump pulley nose cones are offered straight off of the mill without polishing for a gorgeous matte finish
Chevy BBC 454 6.385" 4.280" Bore 1.270" .990" Dome Top Forged Pistons keeping your pulleys looking greatSpeedmaster Forged pistons are made from 4032 aluminum alloy for quieter operation and reduced piston to wall clearance. Up to 20% lighter than traditional forged pistons that eliminate harmful stress concentrations for superior strength. Specifically designed for naturally aspirated or moderate nitrous applications.
