Eagle’s forged crankshaft for Chevrolet 400 applications is made from forged 4340 steel with a non-twist forging and .125" fillet radiuses, noted to require chamfered or narrowed bearings. It features a 4.125" stroke and is internally balanced. The crank is nitrided and micropolished for demanding engine builds where a forged steel crank is specified.
Eagle Chevrolet 400 Forged Crankshaft