56-58 frame differences - NCRS Discussion Boards

56-58 frame differences

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  • Steven B.
    Very Frequent User
    • June 30, 2004
    • 256

    56-58 frame differences

    Help--I'm trying to stop the confusion in my own mind. If the overall max. length and width dimensions for the 56-58 frames are identical, what exactly is the difference in the frames over those 3 years? I know '58 went to a bumper-to-frame attachment where earlier it was bumper-to-body, but I have a '58 sitting on a '57 frame and I'm wondering how the '57 vs '58 differ? Thanks in advance.
  • Mike E.
    Extremely Frequent Poster
    • February 28, 1975
    • 5134

    #2
    Re: 56-58 frame differences

    Steve--extremely minimally. I think you've hit on the primary difference--bumper mounting. No change in front or rear suspensions--both mount the same. Battery tray is identical. No rear stbilizer bar or radius rods on either. Exhaust routing is almost identical on the body and certainly through the frame. e-brake no changes. engine and transmission mounts are the same. Radiator support and shroud are unchanged. Hope that helps.
    Mike

    Comment

    • Mike M.
      NCRS Past President
      • May 31, 1974
      • 8365

      #3
      Re: 56-58 frame differences

      i believe there is a difference in the 56 vs 58 rear crossmember.Seems there is a differeence in the # of holes drilled in the two members.mike

      Comment

      • Roy B.
        Expired
        • February 1, 1975
        • 7044

        #4
        Re: 56-58 frame differences

        Mike and Mike are both right only the frame serial numbers and what you mentioned. But frame only no other parts.

        Comment

        • Steven B.
          Very Frequent User
          • June 30, 2004
          • 256

          #5
          THANKS GUYS-GREAT HELP AS USUAL *NM*

          Comment

          • James F.
            Very Frequent User
            • December 1, 1985
            • 596

            #6
            Re: 56-58 frame differences-Mike

            Mike is correct(asusual) in addition the '63-'56 rear spring hanger is slightly dfferent than the '57 -'62 ear spring hanger. Regards,

            Comment

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