Eagle Chevrolet 400 3.480in Stroke Internal Balance Forged 4340 Steel Crankshaft

This product is an Eagle forged 4340 steel crankshaft designed for Chevrolet 400 engines. It features a 3.480-inch stroke and is configured for internal balance. The crankshaft is built from a non-twist forging of 4340 steel, known for its strength and durability in high-performance applications. This material choice helps ensure the crankshaft can withstand the stresses of demanding engine builds.

Eagle treats this crankshaft with a nitrided surface finish and a micropolished treatment. The .125-inch fillet radii are designed for superior strength, and it's important to note that chamfered or narrowed bearings will be required for installation due to these radiuses. This level of detail in the design and finishing contributes to the overall robustness and longevity of the component.

When building a performance engine, a strong and well-balanced crankshaft is fundamental. This Eagle crankshaft is intended for those undertaking serious engine builds where reliability and performance under stress are key considerations. Ensure you have the correct chamfered or narrowed bearings ready for installation to properly seat this crankshaft.