Eagle Forged 4340 Steel Crankshaft Chevy LS9 4.000in. Stroke w/ LS9 Reluctor Wheel

This is the Eagle forged 4340 steel crankshaft, designed for Chevy LS9 engines. You get the crankshaft itself, which features a 4.000-inch stroke and a long snout. It also comes with the 58-tooth LS9 reluctor wheel already installed, simplifying your build.

Eagle builds these cranks from forged 4340 steel, known for its strength and durability, especially under high stress. The forging process itself is a non-twist design, which helps maintain its integrity. Eagle also treats the surface with a nitride finish and then micropolishes it. This process hardens the surface for better wear resistance and improves oil flow. You'll need to use bearings with .125-inch fillet radii, as this crank has chamfered or narrowed fillets for added strength in those critical areas.

This crankshaft is intended for serious engine builds where reliability and strength are paramount. The inclusion of the LS9 reluctor wheel means you're getting a key component for your engine management system ready to go.