GM LS Billet Crankshaft 4.000 Stroke w/24-Tooth

The GM LS Billet Crankshaft 4.000 Stroke w/24-Tooth is engineered for serious engine builders and performance enthusiasts who demand durability and precision in their LS-series builds. Whether you're constructing a naturally aspirated stroker, a high-RPM racing engine, or a heavily modified street machine, this billet crankshaft provides the structural integrity needed to handle increased displacement and aggressive power levels. The 4.000-inch stroke increases swept volume compared to factory LS blocks, making it the foundation for cubic-inch gains without requiring a complete engine family change.

Manufactured from premium billet steel rather than cast iron, this crankshaft eliminates the porosity and weak points inherent in cast designs, significantly improving fatigue resistance and reliability under sustained high-load conditions. The internal balance configuration distributes reciprocating mass evenly, reducing vibration and stress on bearings and main caps—critical when running elevated boost or naturally aspirated power. The 24-tooth reluctor wheel (exciter ring) integrates seamlessly with modern LS engine management systems, providing accurate fuel injection and ignition timing signals for both stock and custom ECU tunes. The one-piece rear seal design simplifies installation and eliminates common leak points found in two-piece seal arrangements.

This crankshaft is ideal for LS1, LS2, LS3, LS6, LS7, LS9, and comparable LS-family engine platforms commonly found in Chevrolet Corvettes, Camaros, Silverados, and popular swap platforms. Installation requires proper machine work—balancing to your specific rotating assembly, block line-boring if needed, and verification of proper reluctor wheel clearance. Professional engine builders typically pair this component with matching pistons, rods, and bearings to ensure all rotating components are balanced as a complete assembly, maximizing engine life and minimizing harmonics.