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Thread: How to 4L60E to 4L80E trans swap

  1. #21
    Join Date
    Mar 2003
    Location
    San Antonio, TX
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    11,117
    Quote Originally Posted by 567234ta View Post
    great to hear man, that is such a sweet truck
    Thanks buddy,

    I'm actually going to send the converter off and get it tightened up. I ordered a 2800 stall, but under mid throttle, the rpms stay at 3000-3200rpms and I can get about 3400rpms during a brake stall.

    I'd like to have a true 2800stall in there.

  2. #22
    HotRodV6 Guest
    Hey Allen, how much are those adaptors to run the 4L80E with the stock 4L60E harness??

    And do you still have to go in and change the PCM to 4L80E?

  3. #23
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,689
    You won't beat his price for the adapter. yes, you'll have to get the tune overlayed with an 80e tune for the transmission. PM Allen and Melissa and they'll fix you up.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  4. #24
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,117
    Thanks Red, you pretty much answered it.

    The 80e conversion harness is $89.

    Yes, you'll need the pcm setup for an 80e or the trans will not shift right.

    thanks,
    allen

  5. #25
    HotRodV6 Guest
    thats a sweet deal. I will be getting one of these for my Ty.

    Thanks

  6. #26
    Join Date
    Feb 2005
    Posts
    465
    Quote Originally Posted by farmtruc View Post
    Just an update.

    I added a 6qt capacity transmission pan, whoopti dooo, lol.


    I actually wanted to post this incase anyone had the same issue.
    From the day I installed the transmissoin and the truck was drivable, the converter was doing wierd things. The trans would shift just fine, then the converter would lock up after fourth just like its supposed to. BUT, when I would come to a stop, the converter wouldn't unlock until a 1st gear downshift. This was very annoying and you can imagine how loaded the trans and truck was when trying to accelerate about 30mph, after slowing down.
    I tried several calibrations, tons of tuning and couldn't fix it. Chuck suggested I replace the TCC solenoid, I did and now it works. It seems the TCC sol. can lock and work half ass, but not unlock.

    I just wanted to post this, it may help someone out in the future.

    NOW, the trans and converter are working together great and the truck is awesome!

    later,
    allen
    And this might solve my problem, the exact same thing is happening to mine. But where do I get a new tcc sol. and where in the truck is this located at?

    Thanks Allen
    2001 GMC Silverado



    Stock Bottom End LQ9, MS3, Stock 317's, Victor Jr, Aron's Elbow, 90mm TB, 1 7/8 TSP headers, FLT 4L80-E, Rossler Trans-Brake, 3600 PI TQ, 4.10's, 31" tire. Nitrous Dave System with Zex plate. On 150 shot 10.53 @ 128MPH 1.51 60'

    Old Setup = Trick Turbo Kit Tuned/Installed By Nelson Performance 10.78 @ 127.08 1.62 60'

  7. #27
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,117
    Quote Originally Posted by JJ_TURBO View Post
    ...and where in the truck is this located at?

    Thanks Allen
    Remove the pan, then it's located towards the front of the trans, near the converter.
    It's the only solenoid that looks like the new one you'll get, it will only connect to one connector on the internal trans harness.
    To remove, get a small pick and remove the snap/retaining ring.
    Pull the sol. out and install the new one.

  8. #28
    Join Date
    Feb 2005
    Posts
    465
    Where do I get a new one?
    2001 GMC Silverado



    Stock Bottom End LQ9, MS3, Stock 317's, Victor Jr, Aron's Elbow, 90mm TB, 1 7/8 TSP headers, FLT 4L80-E, Rossler Trans-Brake, 3600 PI TQ, 4.10's, 31" tire. Nitrous Dave System with Zex plate. On 150 shot 10.53 @ 128MPH 1.51 60'

    Old Setup = Trick Turbo Kit Tuned/Installed By Nelson Performance 10.78 @ 127.08 1.62 60'

  9. #29
    Join Date
    Mar 2003
    Location
    San Antonio, TX
    Posts
    11,117
    I'd get one from the dealer.

  10. #30
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,689
    Call FLT. Its their transmission. They should have put a new one in when they built it, right? Now its your responsibility to replace a defective part plus fluid?
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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