BBC 4340 Crankshaft 4.500 Stroke

The BBC 4340 Crankshaft 4.500 Stroke from SCAT ENTERPRISES is designed for serious big-block Chevy engine builders who are looking for maximum displacement and durability in high-performance applications. This premium crankshaft is suitable for drag racers, marine engine builders, and street performance enthusiasts who require reliability under extreme loads and RPM demands.

Machined from 4340 steel, a superior alloy known for its exceptional strength-to-weight ratio and fatigue resistance, this crankshaft is engineered to withstand the violent stresses of high-boost forced induction, nitrous oxide systems, and sustained high-RPM operation. The 4.500-inch stroke dimension allows for larger piston travel, which is essential for increased displacement, enabling builders to maximize cubic inches from BBC platform engines while maintaining proper rod-to-stroke ratios.

This crankshaft is ideal for engine builders who are combining it with compatible rods, pistons, and block work to achieve 454 cubic inch or larger BBC configurations. Proper balancing to your specific rotating assembly weight and damper selection is crucial, and it is recommended to work only with experienced machinists for installation.