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Thread: 6l80e lock converter in 4th at wot

  1. #1
    Potential Tuner
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    6l80e lock converter in 4th at wot

    Just have a question. So should I unlock my converter in 4th gear at wot in my 2013 Caprice PPV? I already unlocked it in 1-3 gears

  2. #2
    Advanced Tuner Cringer's Avatar
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    Quote Originally Posted by soberservice View Post
    Just have a question. So should I unlock my converter in 4th gear at wot in my 2013 Caprice PPV? I already unlocked it in 1-3 gears

    What converter? A stock converter or aftermarket single disk converter cannot be locked at WOT in any gear. It will slip, cause heat, and ruin your trans. The only converters that are designed to be locked at WOT are triple disks.
    A standard approach will give you standard results.

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  3. #3
    Senior Tuner
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    A lot of 6l tunes will keep the converter locked up. TUTD mode keeps the converter locked up for the most part too.

    Personally.. I'd unlock it.


    It's a old hotrod trick to do a TCC lockup switch back in the day. I did this and know many others who did. Often they wouldn't ET any better but pick up a little MPH. Applying the TCC mid pull especially if the converter isn't stock on a 6l is pretty hard on it.

    The stock programming can get away with it because unlocked and locked are often not too far off from each other because the converters are so tight.
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  4. #4
    Senior Tuner
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    Yep, fine to leave 6Lxx factory converter locked on a mild combo at WOT. Whatever gear doesn't matter. It's the slip that kills them, that part needs tuning out.

    FWIW at WOT I am unlocked 1-2, then pull it down to lock on the run through 3rd gear. For normal cruise I'm unlocked 1-4.
    Last edited by hjtrbo; 08-04-2023 at 07:22 PM.