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non-stick PTFE inner core
they replace your existing worn or damaged valve guides
They are heat-treated prior to thread rolling and machining and are rated at a whopping 190
These control arms are manufactured to strict tolerances to employ a great fit and exceptional performance
Get genuine Speedmaster stainless steel valves
Chevy 400 427 Ford 351W Windsor 4.165" 1.015" Dished -16cc Forged Pistons non-stick PTFE inner coreSpeedmaster 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.
