Hemi 440 Steel Billet Crankshaft 3.750 Stroke Although the GM heads are

Although the GM heads are good pieces

they're guaranteed for life

Our Speedmaster polished alternator brackets are brand new pieces that are stamped from heavy-gauge steel for strength and durability

stainless steel alloy and are carefully designed to increase gas flow for more power

Speedmaster shifters designed to fit most 3 or 4-speed automatic transmissions

Hemi 440 Steel Billet Crankshaft 3.750 Stroke Although the GM heads areSpeedmaster 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.