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4l80

  1. 1993 GMC K3500 4L80 wiring

    Cummins 6BT / 5.9 Conversions
    Hi all Looking at keeping my freshly rebuilt 4L80 in my 93 dually for my 6BT swap, the truck was a 6.5 originally and was the last year for a mechanical pump i believe? What inputs do I need to keep to give the computer so my trans still shifts? I've read some places it just needs RPM, throttle...
  2. Transmission and Transfer Case help...

    Transmission, Adapter, Transfercase Discussion
    Hello all, I've got a few questions that I hope someone can help me out with. A few months back, I acquired a 4bt engine (the whole van actually). I'm swapping this into my 85 F-150. The engine came with a th400 2wd trans. What I'm wanting to use is a 4L80e (to retain the overdrive like I...
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