1970 M21 Muncie 4 speed casting # detail

Discussion in 'U-shift em' started by Rich Johns, Oct 13, 2006.

  1. Rich Johns

    Rich Johns Platinum Level Contributor

    Does anyone have and original 70 GS 455 4 speed or 70 GS Stage 1 4 speed car that can verify correct casting #'s for the following?
    Main muncie case #
    Side cover #
    Tailstock housing # ( and does speedo cable attach on drivers side ?)
    Pics would be nice.
    Again,thanks for anyone who can assist.
     
  2. George D.

    George D. Platinum Level Contributor

    Main case # 3925660
    The date number should be something like P0A15B (at least P0 and B)
    Speedo connects on passenger's side
    I don't have side cover numbers. The above was pulled off a 70 Stage 1 M-21 built on January 15, 1970
    Tailshaft:
    3857584- 27 spline output
    3978764 - 32 spline output
     
  3. Rich Johns

    Rich Johns Platinum Level Contributor

    Thanks for your input George.
    Anyone else have a original 70 big block stick car that we can compare #'s ?
    Thanks
     

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