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Thread: 2011 6l80e transmission wont make shift WOT, Tune attached, Silverado 5.3l, changes?

  1. #1

    2011 6l80e transmission wont make shift WOT, Tune attached, Silverado 5.3l, changes?

    Ive got a 2011 silverado 5.3L that I put a procharger on (dynos about 400 rwhp).


    I haven't changed any transmission settings and after the dyno tune, it immediately wouldnt make the shift at full throttle correctly.

    I made some changes in the torque management, shift points etc because I need it to shift about 6000-6100 at full throttle and it will not, just runs into the rev limiter etc. (even with lowering mph/rpm shift points etc)


    Here is the tune, anyone know what ive got wrong here? never had a problem with 2009-2010's..
    ~01 Duramax 4x4 2500hd- 490rwhp - Kinda Fast
    ~00 Silver SS - 55k miles, 5xx rwhp, Fast
    ~00 Silver WS6 - 32k miles, 6xx rwhp, Faster
    ~89 NotchBack - LSx - S400, xxx rwhp, Fast'ish
    ~90 Mustang LX - 403" LSx S-91, 1,xxx rwhp, Fastest

  2. #2
    Tuner in Training
    Join Date
    Jul 2009
    Posts
    13
    I think your shift speed is too high. Try lowering it to 36mph, see if that solves things.

    Oh and did you play with your tire size at all, I didn't look. if so you could have it out enough to make your speed VS RPM out of whack.

  3. #3
    Advanced Tuner midevil1's Avatar
    Join Date
    Feb 2009
    Location
    TX
    Posts
    364
    You need to even up your WOT shift speeds at normal and full throttle. You max shift rpms are lower than what you want it to shift at????Drive the truck down the road and hold the first 4 gears until red line than plug those value's into you table for WOT shifts..
    Last edited by midevil1; 04-13-2011 at 02:50 PM.
    2023 Ford Edge ST

    2020 Ford F150 King Ranch 5.0

  4. #4
    Tuner
    Join Date
    Dec 2009
    Location
    So MD
    Posts
    132
    I use this spreadsheet to match RPM and MPH.