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These Speedmaster 8-71 and 6-71 supercharger manifolds are aluminum constructed and suitable for competition or street use
These high-flow style air cleaners feature chromed steel construction and a free-flow
stainless steel alloy and are carefully designed to increase gas flow for more power
non-stick PTFE inner core
The Speedmaster shift selector shaft is built with sturdy
Hemi 440 Steel Billet Crankshaft 4.100 Stroke These Speedmaster 8-71 and 6-71Speedmaster 4340 Billet Steel crankshafts are manufactured from high quality true billet round bar stock. Their performance, strength and horsepower capabilities are significantly outstanding compared to cast forged crankshafts. An engine with a 4340 billet steel crankshaft will rev faster and cleaner due to the different harmonics produced from the high grade material. Those crankshaft are x rayed and ultrasonically tested.
