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Thread: 700r4 behind LS1

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  1. #1
    Join Date
    Jun 2010
    Posts
    25
    Another ? how do you control the TCC lockup? Do you let the old style truck run it off the old ecm or do you have to use a standalone lock up kit like tci or the gm performance one.

  2. #2
    Join Date
    Jun 2010
    Posts
    25
    Decided to go with the TCI kit, it does a little more than the gm kit for 10 dollars more. Allows lock up in 2-4 and manual lockup too. I will have my computer setup for basically a m/t with no automatic controls and the let the transmission do its own job.
    Last edited by classic79; 07-13-2010 at 10:40 PM.

  3. #3
    Join Date
    Jun 2010
    Posts
    25
    Got everything bolted up now. Using a TCI lockup kit and getting the power from my factory trans harness terminal A is 12+ unitl brakes are pressed then circuit opens. This works with option 3 in TCI's instructions. It will disengage the lockup when brakes are pressed as well as upon downshift.

    I am wondering what people have used for a dust cover? the old on from my 350/700 doesn't fit the ls motor. would one from a 5.3 truck w/ 4l60e work with the 700?

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