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Eagle forged 4340 steel crankshaft for Chevrolet 454 engines, 4.500" stroke, center counterweighted, internal balance and a 1‑piece rear seal. The non-twist forging and .125" fillet radiuses increase strength and require chamfered or narrowed bearings. Nitrided surface and micropolished journals enhance durability. Center counterweights add stability for high-RPM, high-power applications.
Eagle Chevy BB 1Pc Rear Seal 4.500in Stroke Int Balance Center Counterweight Forged Steel Crankshaft
