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4343 Forged Steel Ford SB Crankshafts Ford 351W (2.100
Forged from 4340 steel, these cranks are 100% inspected, stress relieved and shot peeped. Large .125? radius on rod and main journals for increased strength. Indexed for correct stroke. Precision ground and micro polished. Nitrided journal surfaces for superior wear. Machined in the USA.