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  1. yukon702

    1997 4l80e to a 2007 LS engine

    Will a 1997 4L80E bolt up to 2007 LS engine? It is for my Yukon. The only difference I see in the bolt pattern is the center top bolt. The LS engine has a bolt hole but this year of 4l80 doesn't. It does have the "newer" trans cooler line seperated. A guy is selling this 4l80 with only 70k...
  2. yukon702

    Additional parts needed when installing Kooks headers?

    Can anyone provide any extra info for parts when installing Kooks headers? Such as what sensor extensions are needed or anything else. I'd appreciate it
  3. yukon702

    How does my ring pinion pattern look?

    I got rid of the g80 and installed an eaton truetrac and installed 4.10 motive gears. Ive never done this before so its taken weeks for me to get it close to specs. If you can tell me how my pattern looks and any advice will be great
  4. yukon702

    Easier install on a 5.3 a 4L80e or 6l80e?

    I have a 2007 Yukon with a 5.3 and a weak 4L60e. I've given it a band aid by putting in a shift kit because it was slipping. I know eventually I'll need to rebuild my transmission but I just don't want to stay with the 4l60. I'm going to install a whipple in the very near future and I want to...
  5. yukon702

    Has anyone ever installed a 4L80e in a 2007 or newer tahoe/yukon?

    I'm just curious if anyone has installed a 4L80E into a 2007 on up in a tahoe/Yukon before? If so can you show me what site,link or any info will be greatly appreciated
  6. yukon702

    Any difference between 3.73 and 3.90 gears?

    I have a basic 4l60e with a transgo shift kit and black bear tune. I live by mountains and we take trips up to the lake. The suv is great but lags on the pickup without me having to punch it. Right now I have 3.42 in the rear. Any advice about the difference between 3.73 and 3.90 will be...
  7. yukon702

    Boost valve removal

    Has anyone tried removing their boost valve with the tranny still in the suv? Please give actual answers and not why or I think or I guess. I'm in a bind and I really need to replace my boost valve but I can not fully get to it because their is electrical connection right on top of it. Does...

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