SBM Cast Steel Crank - 3.310 Stroke

The SBM Cast Steel Crank 3.310 Stroke by Eagle is engineered for builders and enthusiasts seeking a reliable foundation for small-block engine builds. This crankshaft serves as the rotating heart of your engine assembly, converting reciprocating piston motion into usable rotational force. Whether you're constructing a street engine, performance rebuild, or classic restoration, a quality cast steel crank like this is essential to withstand the demands of combustion cycles and power delivery while maintaining structural integrity over extended use.

Cast steel construction provides an excellent balance of strength, machinability, and cost-effectiveness compared to forged alternatives, making it ideal for street and moderate performance applications. The 3.310-inch stroke dimension is a critical specification that determines engine displacement when paired with bore size and cylinder count—this particular stroke is commonly associated with small-block platforms favored by engine builders. Eagle's manufacturing ensures proper journal sizing, counterweight geometry, and surface finish to minimize stress concentrations and support consistent rotational balance. The 60.1-pound weight reflects the substantial density required for durability and smooth operation across a wide RPM range.

This crankshaft is best suited for engine builders working with small-block variants, including performance restorations and custom street builds where reliability and proven design matter more than extreme weight savings. During installation, verify compatibility with your block's main journal size, rod journal diameter, and overall engine architecture before committing to assembly. Proper balancing with your specific flywheel, damper, and rotating assembly is critical to prevent vibration and ensure longevity. Inspect all journals and counterweights upon receipt, and pair with quality bearings and lubrication practices for optimal performance.