396/427 CRANKSHAFT INTERCHANGE

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  • Rob A.
    Expired
    • December 1, 1991
    • 50
    #1

    396/427 CRANKSHAFT INTERCHANGE

    Other than normal balancing, does a 396 crankshaft need anything special done to it to be used in a 427?
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    • Craig S.
      Extremely Frequent Poster
      • July 1, 1997
      • 2471
      #2
      Re: 396/427 CRANKSHAFT INTERCHANGE

      Rob - the 6223 is used many times in 427 rebuilds, the only difference as Joe mentions is the rebalance. As I recall, one of the middle counterweights is wider in the 7115 crank. It seems most 427's that come apart frequently have a 6223 vs 7115 in them anyway, maybe they have been gone throgh before by now and the original cranks are gone. I would be curious if any known original engines from folks on this board had 6223 forgings instead......but probably not as that would be a special rebalance option at the engine line....Craig
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        • Rob A.
          Expired
          • December 1, 1991
          • 50
          #3
          Re: 396/427 CRANKSHAFT INTERCHANGE

          Thanks....I'll be taking apart a '66 390HP engine this week and wanted to be prepared in case I needed a new crank for some reason.
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            • Craig S.
              Extremely Frequent Poster
              • July 1, 1997
              • 2471
              #4
              Re: 396/427 CRANKSHAFT INTERCHANGE

              Rob - for the price at Howards Cams, you can't beat it. Let us know the forging in the 66....Craig
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