SBC 400 Cast Steel Crank - 3.750 Stroke

The SCAT ENTERPRISES SBC 400 Cast Steel Crank with 3.750 stroke is a purpose-built crankshaft engineered for small block Chevy engine builds requiring external balancing and pro-stock level durability. This cast steel construction delivers the strength needed for high-RPM applications where reliability cannot be compromised, making it a core component for engine builders targeting competitive performance or maximum output from SBC platform engines.

Cast steel composition provides the material density and fatigue resistance necessary for sustained high-load operation. The 3.750-inch stroke specification is a critical dimension—stroke determines engine displacement when paired with specific bore sizes and directly influences torque characteristics and RPM ceiling. External balancing design allows engine builders to tune rotating mass and counterweight configuration to match their specific combination, a requirement for pro-stock competition engines and builds where OEM internal balancing is insufficient. Weighing 54.5 lbs, this crankshaft integrates into standard SBC 400 block configurations without modification.

This crankshaft is built for engine builders, race teams, and serious enthusiasts constructing small block Chevy engines destined for high-performance operation. Whether assembling a bracket racing engine, street/strip hybrid, or competition platform, the SBC 400 cast steel crank with 3.750 stroke provides the foundation for repeatability and durability. SCAT ENTERPRISES is recognized within the performance engine community for forged and cast crankshaft design; this casting represents the standard specification for 400-cubic-inch small block applications where external balancing is the platform requirement.

Small block Chevy crankshafts are classified by stroke length; common strokes include 3.0", 3.25", 3.48", 3.625", and 3.750". The 3.750-stroke variant is the largest standard stroke for conventional SBC blocks, creating the 400-cubic-inch displacement class when bored to specification. Cast steel cranks are less expensive than forged alternatives while maintaining adequate strength for most high-performance applications; they represent the value-to-performance sweet spot for builders balancing budget and reliability.