SBC Cast Steel Crank - 3.750 Stroke

The SBC Cast Steel Crank - 3.750 Stroke is a purpose-built crankshaft designed specifically for small-block Chevrolet engine builds that require a longer stroke and increased displacement. This component is essential for builders aiming to maximize cubic inches and low-end torque output in performance applications. Whether you're assembling a street engine or a performance build, this crankshaft provides reliability that budget alternatives cannot match.

Manufactured by SCAT Enterprises, this cast steel crankshaft features a 3.750-inch stroke dimension that, when paired with compatible pistons and rods, increases swept volume and enhances bottom-end torque characteristics across the RPM band. The cast steel construction offers excellent durability and damping properties, making it suitable for high-RPM applications. Its weight of 49.3 lbs and precision engineering ensure proper balance with your chosen rotating assembly, reducing vibration and extending bearing life.

This crankshaft is ideal for engine builders upgrading from factory 3.48-inch stroke components or constructing a 383 or 406 cubic-inch displacement package from a small-block foundation. Proper installation requires matching crankshaft journals with compatible rod bearings, main bearings, and harmonic balancer specifications. Always verify your block's main journal diameter and rod journal specifications to ensure compatibility.