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m-21

  1. Chevy M-21 4-spd out of '69 Z/28 w/ Hurst Comp Plus

    Forum Classifieds
    M-21 4-speed trans pulled from my 1969 Z/28. Case code: 3925661 Tail code: 3846429 Side Cover Code: 3884685 Bearing Retainer Code: 3915020 Shifter: Hurst Competition/Plus with all linkage - shifter is offset to center the tunnel correctly for a factory console car. 10 spline input, 27 spline...
  2. Muncie Identification

    Transmission & Driveline
    I recently acquired this Muncie and was wondering if someone could help identify if it is an M-20, -21, or -22. The fellow I bought it from got it for free years ago. He never installed it in anything and believes it to be a 1968 M-21, though he isn't totally sure. Can anyone help identify if...
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