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and have a black oxide corrosion-resistant finish
These Speedmaster 8-71 and 6-71 supercharger manifolds are aluminum constructed and suitable for competition or street use
Speedmaster accessory drive pulleys are built for smooth power delivery and reliability
Flat surfaces are finished with CNC machine center for accuracy and smoothness
Ford SB 289 302 Windsor 5.4" 4.060" 1.090" 0.927" Flat Top Forged Pistons and have a black oxideSpeedmaster 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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