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427 crankshaft

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  • Cliff A.
    Infrequent User
    • January 1, 1994
    • 5
    #1

    427 crankshaft

    I am in the process of rebuilding my 67 427/435. The engine had a 7115 crank in it but it was pretty beat up and had to be turned 10/20. I also have a brand new nitrided 3856223 crank. I am leaning towards having the 6223 cross drilled and using it. Either way everything will be balanced. I would appreciate any input on this. Thanks, Cliff
    Tags: None
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    • Clem Z.
      Expired
      • January 1, 2006
      • 9427
      #2
      Re: 427 crankshaft

      unless you are planning to race the car i would not cross drill the crank because it is not needed for under 7000 RPMs,just get it magnafluxed.
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        • Cliff A.
          Infrequent User
          • January 1, 1994
          • 5
          #3
          Re: 427 crankshaft

          Thanks Clem , I will have the 6223 crank magnafluxed and checked to be sure it is straight before using it. From your responce I assume that you think the fresh crank would be the best choice of the two. Thanks, Cliff
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            • Joe R.
              Extremely Frequent Poster
              • July 31, 1976
              • 4547
              #4
              Re: 427 crankshaft

              Cliff,

              When Clem speaks on engines--just listen! Do what he says and your 435HP/427 will live to run again and again.

              He helped write the bible on performance engines long before we were a twinkle in our daddy's eye.

              Regards,

              JR
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                • Clem Z.
                  Expired
                  • January 1, 2006
                  • 9427
                  #5
                  Re: 427 crankshaft

                  i ain't that old.
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                    • Clem Z.
                      Expired
                      • January 1, 2006
                      • 9427
                      #6
                      Re: 427 crankshaft

                      just radius the oil holes in the crank with a die grinder and a 3/8" diameter mounted grinding wheel to form a small trough on both sides of the oil hole drilling so you have a lead in area for the oil.
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                        • Chuck R.
                          Expired
                          • April 30, 1999
                          • 1434
                          #7
                          Re: A question for that hot rod kid Clem

                          When you speak of die grinding the oil holes, are you speaking of a slight groove straight across the entire bearing surface on either side of the hole, or just oblonging the holes edges slightly?

                          Thanks Clem,

                          Chuck
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                            • Clem Z.
                              Expired
                              • January 1, 2006
                              • 9427
                              #8
                              Re: A question for that hot rod kid Clem

                              i just put a groove across the oil hole the width of the hole by going straight down with the side of the 3/8" diameter by 3/4' to 1" long stone till it reaches the width of the oil hole. you end up with a oval shaped groove cut into the journal.
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                                • Chuck R.
                                  Expired
                                  • April 30, 1999
                                  • 1434
                                  #9
                                  Re: Sorry Clem you lost me at the bakery

                                  I just can't envision what your explaining.

                                  Could you by chance send me a rough sketch?

                                  What can I say, I've been challenged for years and it's getting worse.

                                  Chuck
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                                    • Clem Z.
                                      Expired
                                      • January 1, 2006
                                      • 9427
                                      #10
                                      Re: Sorry Clem you lost me at the bakery

                                      send me your e mail address and i will scan a picture to you.
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