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050 effectively decreasing spring pressure
Speedmaster cylinder head fasteners are made from aircraft quality 8740 high tensile strength chromoly steel and cold-forged to ensure molecular integrity
They are manufactured from cast aluminum and are offered with breather holes or without any holes
Their performance
Individually milled from super durable 6061 T6 aluminum billets
Ford 351W Windsor 408 434 ci 4.020" 1.250" 0.927" Flat Top Forged Pistons 050 effectively decreasing spring pressureSpeedmaster 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.
