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Gene, I would doubt that a tractor crank would have the same bore spacing that a 308 has, But who knows? bearing sizes also could be a real problem. ...

Gene, I'm not sure the meaning of a tracker crankshaft. Butch Smith has a 5 inch stroker crank made out of a solid steel billet. And I've seen a 5 inc...

Gene, my block was cast on Dec 5 1955---Dam