Eagle Chevrolet LS 4340 3.800in Stroke 58 Tooth Reluctor Forged Crankshaft

This is the Eagle forged 4340 steel crankshaft, designed for Chevrolet LS engines. It features a 3.800-inch stroke and includes a 58-tooth reluctor wheel, making it a solid foundation for a high-performance build. If you're looking to significantly increase the displacement and power potential of your LS engine, a crankshaft like this is a critical component.

Eagle starts with a non-twist forging of 4340 steel, which is known for its strength and durability under stress. This material is then treated with a nitrided surface finish and micropolished for a smooth, wear-resistant surface. The fillet radii are .125 inches, which are chamfered or narrowed to accommodate specific bearing types, ensuring proper oil clearance and load distribution. This level of attention to detail in the forging and finishing process means this crankshaft is built to handle the demands of a serious engine build.

When installing this crankshaft, pay close attention to the bearing requirements due to the .125" fillet radii. Using the correct bearings is essential for proper oil flow and longevity. This crankshaft is intended for builds where reliability and performance under high stress are paramount.