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speedo gear

  1. Transmission & Drive line
    Picking up a complete drum to drum 3.73 posi rearend for my 86' on thursday, i'm a little confused on the drive gear speedo gear thing. Do I need to change the governor? How do you change the speedo gears and drive gears? My current drivetrain is 305/2004r/2.41 rear. Any clarification on...