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4L80e to 203 adapter?

Discussion in 'The Garage' started by Kavik, Oct 27, 2006.

  1. Kavik

    Kavik Newbie

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    Noob here...

    I have a 1994 2500 2wd donor truck w/ a 5.7tbi and a 4L80e trans. I'm putting the motor in my Land Cruiser wagon FJ60.

    I have a 700r4 ready to bolt in(even has the AA tailshaft for the 203) and I am also using a 203 range box infront of my t-case as a doubler.

    Here's the question...Has anyone put a 203 behind a 2wd 4l80e? Should I stick w/ the built 700r4 or try to get the 4l80(already attached to the 5.7) to work? Keep in mind this is a conversion, so wiring, mounts, crossmenbers,etc are all going to be modded.

    Thanks!
     
  2. sweetk30

    sweetk30 professional hooker Premium Member

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  3. Kavik

    Kavik Newbie

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    Holy crap! See you in a couple of hours.

    Muchos gracias
     
  4. Jimbo*

    Jimbo* 1/2 ton status

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    PM "muddybuddy" He's doing the 4l80/203 with a modified th400/203 adapter plate to keep overall lenght as short as possible.
    Jimbo
     
  5. muddybuddy

    muddybuddy 3/4 ton status

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    yep im going to be doin this very soon. im picking up my tranny and 205 tomorrow afternoon. i just need the doubler adaptor and triple stick and then ill begin puttin the 4L80E/203/205 together :)
     
  6. Kavik

    Kavik Newbie

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    Again, sorry for the noob questions, but...

    In a swap situation, should I keep the 4l80e with the motor or swap in the 700r4? I already have both trannies. I'm a little spooked about the electronics of the tbi motor working w/ the 700r4. The 700r4 has been set up for a manual valvebody lockup(no wires). But, the motor will require a modified harness and chip. I'm prepared to do this only because I thought there was no way to bolt up the 4l80 to the 203...I just found you guys...Damn.

    FYI - This is going into a LandCruiser wagon w/ 4.88's and 37's.

    Mud - post pics if you can! I'm new to modern GM stuff. I don't know what I'm looking at at the bone yard:doah:
     
  7. gmcburb1965

    gmcburb1965 clever user title

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    Gonna start a thread?
     

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