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All Speedmaster 23deg
The TorqueWorm is a torque biasing 6 pinion gear type limited-slip unit
The Speedmaster shift selector shaft uses an O-ring to prevent leakage from GM TH400 cases
The "S" shape gap between inner and outer ring is press inserted with sulfated elastic rubber to ensure the damper will not disintegrate under any circumstance
Chevy BBC 454 6.385" 4.280" Bore 1.270" .990" Dome Top Forged Pistons All Speedmaster 23degSpeedmaster 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.
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