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Cast crank rpm limits?
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12-04-2022, 06:30 PM
tom s
Ultimate Warrior
Join Date: Jan 2000
Location: long beach ca usa
Posts: 18,796
When I build my 421 SD almost 25 years ago,used a 4 bolt 428 block,Armasteal crank,knife edged,nitrited.Carillo rods.Raced it for a few years shifting at 6200.Still in the car running great.Tom
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