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Speedmaster replacement vacuum advance canisters are designed to meet or exceed OEM specifications for accurate
They not only unleash horsepower
Their strong die-cast aluminum design ensures an excellent gasket seal and dissipates heat better than many other covers
you reuse all of your existing Speedmaster shifters parts
and have a black oxide corrosion-resistant finish
Ford SB 289 302 Windsor 5.4" 4.060" 1.090" 0.927" Flat Top Forged Pistons Speedmaster replacement vacuum advance canistersSpeedmaster 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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