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Eagle forged 4340 steel crankshaft for Chevrolet 454 applications with a 4.000" stroke, internal balance and a 1‑piece rear seal. It uses a non-twist forging and .125" fillet radiuses for increased strength, requiring chamfered or narrowed bearings. Nitrided and micropolished finishes enhance wear resistance. The 1‑piece rear seal design suits builds that retain a conventional rear seal arrangement.
Eagle Chevrolet BB 1Pc Rear Seal 4.000in Stroke Internal Balance Forged 4340 Steel Crankshaft
