The Eagle Chevrolet 400 3.480-inch stroke forged crankshaft is designed for high-performance applications requiring exceptional strength and durability. Crafted from premium 4340 steel, this crankshaft features a non-twist forging process and a nitrided surface finish that enhances fatigue resistance and corrosion protection. The .125-inch fillet radiuses provide superior strength at critical stress points, making it suitable for demanding engine builds. This crankshaft is intended for internal balancing, which allows for precise customization based on your specific rods and pistons, ensuring optimal engine performance and longevity.
The crankshaft's robust construction ensures it can withstand the rigors of high horsepower and high RPM environments typical of racing or high-performance street applications. Its design accommodates narrowed bearings, which are essential for proper fitment and performance in Chevrolet 400 engines. Proper engine assembly requires balancing the crankshaft to match your selected components, a crucial step for smooth operation and maximum engine life.
Manufactured by Eagle, a trusted name in high-performance engine components, this forged 4340 steel crankshaft offers reliability and strength for serious enthusiasts and professional builders. The part number EAG440034805700 ensures compatibility with Chevrolet 400 engines, making it a versatile choice for custom builds or rebuilds. Whether you're upgrading your existing engine or building a new high-performance setup, this crankshaft provides the foundation needed for reliable power delivery and engine durability.






