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Thread: 4t65e 1-2 upshift bounches off limiter

  1. #1
    Tuner in Training Onomoto's Avatar
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    4t65e 1-2 upshift bounches off limiter

    So i have tried to do the research but have not got the results i wanted. Under wot the 1-2 up shift bounces off the limiter i have tried to set the wot shift point m.p.h to 0 as i have read to try.

    I would like to shift at 6500 so i set them lower to 6300 as i have also read.
    When you look at the log my last 1-2 up shift is about at the end.

    I have tried to study up on what i am trying to achieve but haven't had my results i want. please look over and tell me what you think
    2001 monte carlo swapped l67 on e85
    XP cam
    gen5 m90
    speed daddy headers 3 inch exhaust
    3.5-3.2 pully

  2. #2
    Tuner ZeroBoostBuick's Avatar
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    Your fuel cut-off is set to 6,400 rpm

    Also your trans shift scheduling / part throttle 1-2 gear your 75% to 100% is at 46 / 47 mph... i'd lower it to 45.
    Last edited by ZeroBoostBuick; 10-17-2019 at 10:08 PM.

  3. #3
    Tuner ZeroBoostBuick's Avatar
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    6,500 rpm is a hairr passed the power band. car should run quicker when shifting at between 6,000 and 6,200 rpm,... unless you have a different camshaft.

  4. #4
    Tuner in Training Onomoto's Avatar
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    Thank you zero boost. I just now saw your post at 9.00 at night. While I was at work I saw the fuel cut off was at 6400. Not sure why I over looked it before but I raise it to 6800 and lower the 1/2 to 43 mph. Made a pass with the shift point at 6400 and it went right into 2nd gear. Car has a XP cam need to find its happy shift place still. Thanks for the reply.
    2001 monte carlo swapped l67 on e85
    XP cam
    gen5 m90
    speed daddy headers 3 inch exhaust
    3.5-3.2 pully

  5. #5
    Tuner ZeroBoostBuick's Avatar
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    OK cool I'm glad to hear all is good


    Any other questions, don't hesitate to ask or PM me.
    I miss the 3800 cars I've owned. 3800 cars are wrench monkey heaven !!!

    If you want the trans to last, I recommend AMSOIL Signature Series ATF.

  6. #6
    Tuner in Training Onomoto's Avatar
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    I have used Alison's transynd fluid and have had pretty good luck. With the correct supporting mods what's the xp make power to? I have pac 130 springs I am not worried about valve float
    2001 monte carlo swapped l67 on e85
    XP cam
    gen5 m90
    speed daddy headers 3 inch exhaust
    3.5-3.2 pully