SBC 4340 Forged Crank - 4.000 Stroke/350 Main

The SBC 4340 Forged Crank - 4.000 Stroke/350 Main is a high-performance rotating assembly component designed for small block Chevy enthusiasts looking to maximize displacement and torque. When building a stroker engine, the crankshaft serves as the backbone of the entire power plant, and this unit provides the necessary durability for high-horsepower builds. It is an essential upgrade for racers and performance street builders who are transitioning from stock cast components to competition-grade hardware.

Constructed from premium 4340 forged steel, this crankshaft offers exceptional tensile strength and fatigue resistance compared to standard cast or nodular iron alternatives. The 4.000-inch stroke significantly increases engine displacement, while the 350 main journal size ensures compatibility with standard small block Chevy blocks without requiring specialized oversized machining. Each journal is precision ground and heat-treated to maintain critical tolerances under the extreme thermal and mechanical stresses found in high-performance applications.

Engine builders will find the SBC 4340 Forged Crank - 4.000 Stroke/350 Main ideal for creating long-stroke combinations that require a robust bottom end for consistent performance. This component is specifically designed for Small Block Chevrolet engines utilizing a 350 main diameter, making it a versatile choice for a wide range of aftermarket and OE blocks. Proper balancing and professional installation are recommended to ensure optimal longevity and to fully realize the power potential of your custom engine project.