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A forged 4140 steel crankshaft for Chevrolet big-block applications, this internal-balance crank features a 4.250" stroke and non-twist forging for high strength. Eagle specifies .125" fillet radiuses, nitrided surfaces and micropolishing, and notes the crank is intended for competition use. The construction prioritizes durability under demanding conditions while requiring compatible bearing clearances.
Eagle Chevrolet Big Block 4.250in Stoke Internal Balance Forged 4140 Steel Crankshaft
