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Couple of questions about interchangeable parts

Transmission and Drivetrain

  1. valkman

    valkman Well-Known Member

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    In the Triad NC
    Am I correct in assuming that all '66 and up 23 spline 4spd main shafts are interchangeable?

    Can a old style syncro rings just be interchanged with a newer style or is there more to it?
    SR294SR307.jpg

    I'm trying to swap out the guts of a 4spd out of a 68 Roadrunner that has a larger input shaft bearing into 73ish? 4spd stamped PP8334262. The main bearing in the 68 (right) tailshaft is smaller than the 73 (left) go figure. 20170415_160148_resized.jpg

    Can anyone tell what correct bearing is for the one on the left?
     
  2. moparlee

    moparlee Well-Known Member

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    I can't tell you, but the guys at Brewer's can answer all your 4 spd questions. Give them a call.
     
    paharamia and DetMatt1 like this.