SBF 4340 Forged Crank - 3.400 Stroke

The SBF 4340 Forged Crank with 3.400 stroke is a precision-engineered crankshaft designed for small block Ford engine builds demanding durability and reliability. Built by SCAT ENTERPRISES, a trusted name in high-performance engine components, this forged steel crank serves both stock restoration projects and modified powerplants where strength and longevity are non-negotiable. Whether you're rebuilding a classic Ford engine or upgrading an existing platform, a quality forged crank forms the backbone of any respectable engine assembly.

This crankshaft features a 3.400-inch stroke dimension, defining the piston's travel distance and directly influencing engine displacement and low-end torque characteristics. The forged 4340 steel construction provides superior tensile strength and fatigue resistance compared to cast alternatives, critical for handling high RPM loads and maintaining structural integrity under sustained performance conditions. Internal balance design eliminates the need for external counterweights, reducing parasitic drag and improving overall efficiency while maintaining compatibility with both 1-piece and 2-piece seal configurations common to small block Ford applications. The standard weight classification ensures compatibility with factory and aftermarket internal components without requiring extensive machine work or rebalancing.

Technicians and engine builders working on small block Ford platforms—including 289, 302, 351W, and related displacements—will find this forged crank suitable for street engines, marine applications, and moderate performance builds. The internal balance feature makes installation straightforward when matched with compatible pistons and rods, eliminating additional balancing costs. Proper installation requires professional machine work for journals and surface preparation, ensuring optimal bearing clearances and long-term reliability in your rebuilt engine.