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Speedmaster aluminum pulleys are made from a 356 aluminum alloy that is heat-treated to T-6 specs
Designed to bolt onto our aluminum center sections and used with our various housing end applications
and 3/8 in
modeled off OE castings for factory fit and finish
They feature stamped steel construction in a chrome or powdercoated finish to add just the right look to your project
GM Turbo 400 TH400 Billet 300M Steel Input Shaft Speedmaster aluminum pulleys are madeHigh horsepower and hard launches at the drag strip can cause tremendous stresses on the internal transmission components. Speedmaster Input shafts can withstand the stresses and the added power.
