Eagle Chevy LS1 24 Tooth Reluctor 4140 Forged Crankshaft

If you're building a high-performance Chevy LS1 engine for competition, a strong crankshaft is the foundation of your build. This Eagle forged 4140 steel crankshaft is designed to handle the demands of serious performance applications, providing a solid base for your engine's rotating assembly.

Eagle starts with a non-twist 4140 forged steel forging, which is known for its strength and durability. The .125" fillet radii are chamfered, meaning you'll need to use chamfered or narrowed bearings to ensure proper fitment and oil clearance. This design detail contributes to the crankshaft's overall robustness. The surface is nitrided and then micropolished, a process that hardens the exterior for improved wear resistance while the micropolishing ensures a smooth finish for reduced friction and better bearing life. This crankshaft also includes a 24-tooth reluctor, essential for proper engine management system operation in many LS1 applications.

This crankshaft is intended for competition use, so it's built with the strength and precision required for racing or other high-stress environments. Ensure you have the correct chamfered or narrowed bearings and consult your engine builder or service manual for proper installation procedures and torque specifications.