Eagle Chevrolet 305/350 3.480in Stroke Forged 4340 Steel Crankshaft

This is the Eagle forged 4340 steel crankshaft, designed to replace the factory unit in a wide range of Chevrolet 305 and 350 engines. If you're building a high-performance engine or rebuilding a classic, a strong crankshaft is the foundation of your build. This forged steel crankshaft offers improved strength and durability over cast iron factory cranks, making it a solid choice for demanding applications.

Eagle starts with a non-twist forging of 4340 steel, which is known for its excellent strength-to-weight ratio. The fillet radii are .125 inches, which means you'll need chamfered or narrowed bearings for proper fitment. This design detail contributes to superior strength by reducing stress risers. The surface is nitrided and then micropolished, a process that hardens the surface for wear resistance while also creating a smooth finish for optimal bearing performance. This attention to detail ensures the crankshaft can handle the stresses of a powerful engine.

This crankshaft is intended for serious engine builds where reliability and strength are paramount. It's a substantial component that forms the heart of your engine's rotating assembly. When installing, always refer to the manufacturer's specific instructions regarding bearing selection and clearance to ensure optimal performance and longevity.