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The Eagle forged 4140 steel crank for Buick 231 CID (3.625" stroke) is an internally balanced unit intended for competition use. Eagle’s 4140 forgings feature a non‑twist forging and .125" fillet radiuses to increase strength, with nitriding and micropolished finishes for surface durability. Supplied to internal balance specifications, this crank targets high‑stress and competition applications.
Eagle Buick 231 CID 3.8L V6 3.625in Stroke Forged Crankshaft
