Eagle GM Gen III LS Forged 4340 Steel Crankshaft - 3.622in Stroke / 58T Reluctor / Internal Balance

Eagle is well-known for making strong engine components, and this forged 4340 steel crankshaft is a prime example. If you're building a GM Gen III LS engine that needs to handle serious power, this crankshaft is designed to be a solid foundation. It features a 3.622-inch stroke, which is a common choice for increasing displacement and torque in LS engines, and it comes with a 58-tooth reluctor wheel, essential for the engine's computer to properly read engine speed.

This crankshaft is forged from 4340 steel, a material known for its excellent strength and durability, especially under high stress. Eagle uses a non-twist forging process and .125-inch fillet radii, which are chamfered or narrowed to accept specific bearings, adding even more strength to critical areas. The surface is nitrided and micropolished, treatments that significantly improve wear resistance and surface finish for smoother operation and longer life. This level of attention to detail means it's built for demanding applications where reliability is key.

This crankshaft fits a wide range of GM Gen III LS engines, including popular models like the Chevrolet Camaro, Corvette, and Cadillac CTS. It's designed as an internal balance crankshaft, meaning you'll need to match it with an internally balanced flexplate or flywheel and harmonic balancer. Because it's built for high performance, ensure all other rotating assembly components are also up to the task to get the most out of this robust crankshaft.