underdrive

  1. matzell

    March 23, 2024 tech day

    The plan is to pull the t-case apart on my 94 FZj80 and install both the 10% underdrive gears and the 3:1 low range set. I am not sure we will have time to do more than one case. Maybe two?? If anyone has an extra case they want to bring and bench build, we can try that as well? My lift will...
  2. 2KCruiser

    Wanted  80 Series HF2A T-Case Low Range 3.1:1 and 10% Underdrive Gear Sets

    Looking for both Underdrive 10% and 3.1:1 for Low Range Gears
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