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Thread: 6l80e shifts killing me

  1. #21
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    i set my adapt presets to 1700kpa for nice firm shifts, on cars with a stock converter it can make it chirp into gear, on converter cars you'll be fine. i still run tm on them too.

    i set all the tm to spark not throttle.

    heres a vid of one of my cars, cam'd & blown 6lt with a 3600 circle'd with a engine/trans combo that's done 146k km's.


    i run similar settings in a mates nitrous 402ci motor, because of the shift extension from the converter you need to set wheel speed lower for the shifts when on n20

  2. #22
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    Quote Originally Posted by Tre-Cool View Post
    i set my adapt presets to 1700kpa for nice firm shifts, on cars with a stock converter it can make it chirp into gear, on converter cars you'll be fine. i still run tm on them too.

    i set all the tm to spark not throttle.

    heres a vid of one of my cars, cam'd & blown 6lt with a 3600 circle'd with a engine/trans combo that's done 146k km's.


    i run similar settings in a mates nitrous 402ci motor, because of the shift extension from the converter you need to set wheel speed lower for the shifts when on n20
    Are you referring to the oncoming pressure presets ? If so that is interesting because 1700 is around 4 times what I am using. Maybe I will do a test and raise them up a bit, although I don't think I will go that high.
    2007 Corvette C6 Vert. A6
    LME LS402, Pat G custom cam, ATI 10% OD Damper
    Circle D triple disc 2600, 3.42 Diff
    YSI, 3.0 pulley, ID 1000's
    Alky Control Meth,
    ARH 1 7/8 headers,
    1009 RWHP @ 7000, 817 RWT @ 6000

  3. #23
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    Quote Originally Posted by realcanuk View Post
    Are you referring to the oncoming pressure presets ? If so that is interesting because 1700 is around 4 times what I am using. Maybe I will do a test and raise them up a bit, although I don't think I will go that high.
    thats exactly what im talking about. i set the all gears to around 1750kpa for the adapts at all torque/temperature, then i adjust the base shift pressures for firmness, with 4-5 5-6 being almost stock pressures. mainly because i run a triple disc circle'd converter and keep it locked between shifts and i dont want it slamming hard on gear change when it's locked.

    ive found on every 6l80e i have tuned that just playing with shift pressures does next to nothing to increasing firmness until you raise the adapts then do a preset/reset.

    doing the above will work

    this is another blown/cam'd 6lt with 2.92 gears and stock stall that i tuned.


    and my old blown car, 2nd gear launch, stock 6l80e.
    Last edited by Tre-Cool; 01-05-2016 at 08:03 AM.

  4. #24
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    Quote Originally Posted by Tre-Cool View Post
    thats exactly what im talking about. i set the all gears to around 1750kpa for the adapts at all torque/temperature, then i adjust the base shift pressures for firmness, with 4-5 5-6 being almost stock pressures. mainly because i run a triple disc circle'd converter and keep it locked between shifts and i dont want it slamming hard on gear change when it's locked.

    ive found on every 6l80e i have tuned that just playing with shift pressures does next to nothing to increasing firmness until you raise the adapts then do a preset/reset.

    doing the above will work
    Interesting stuff... I will play with it a bit in the spring. I don't think I will go that high on the adapts, as my trans shifts very nicely now, but a little more firm wouldn't be bad. Also running a Circle D triple, but not locking on shifts.

    To me the biggest problem with these trannies is that no matter how well the thing shifts, you don't know how things are holding up until you put time on them. If your tune is hurting things, you don't know till its too late. I just refreshed my clutches after 3 summers on my build. Was still nice inside so I know my tune isn't hurting anything.
    2007 Corvette C6 Vert. A6
    LME LS402, Pat G custom cam, ATI 10% OD Damper
    Circle D triple disc 2600, 3.42 Diff
    YSI, 3.0 pulley, ID 1000's
    Alky Control Meth,
    ARH 1 7/8 headers,
    1009 RWHP @ 7000, 817 RWT @ 6000

  5. #25
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    i've only ever had 1 box break on me and that was because we didnt have the tuning parameters available at the time. the gearbox that i ran 10.009 in a full weight commodore (g8) i purchased 2nd hand from the wreckers. i didnt even both changing the fluid, just topped it up and then set all pressures etc on the new box. it then did another 30k km's before i removed the 6.2/blower combo and sold the car off.

    i thrashed the absolute shit out of that car. haha. but im only dealing with cars pushing around 600-750rwhp on dyno dynamics/mainlines, not the disney world dyno's that you guys get in the states.
    Last edited by Tre-Cool; 01-05-2016 at 08:23 AM.

  6. #26
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    Nice.... did at least 50 runs in the 10's on my stock trans before it finally gave up. Burnt the 4/5/6 clutches. Now I have rebuilt and upgraded stuff and as I said, last 3 summers with no issues. I only refreshed the clutches now for maintenance. It was still working perfectly. These trannies are much stronger than most give them credit for. Its all about the tune and keeping them cool.
    2007 Corvette C6 Vert. A6
    LME LS402, Pat G custom cam, ATI 10% OD Damper
    Circle D triple disc 2600, 3.42 Diff
    YSI, 3.0 pulley, ID 1000's
    Alky Control Meth,
    ARH 1 7/8 headers,
    1009 RWHP @ 7000, 817 RWT @ 6000

  7. #27
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    yeah you might find with the upgraded parts you might not need to go as high on the pressures. because parts are so scarce and expensive for the 6l80e for us aussies, i've kept a couple of spare gearbox's in the shed for the past 2 years since i broke the first one and they haven't been touched since i fixed the pressure/temp and fluid amounts for our cars.

  8. #28
    Senior Tuner Lakegoat's Avatar
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    I just looked at my (1-2) stock adapt presets. 0 is 81kpa, 1 is 246kpa, 2 is 411kpa. Should all three of those be 1700kpa for the drags? Your cars shift faster than my 4L80.
    Thanks
    2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
    2013 Silverado 5.3, 6L80k 8.8

  9. #29
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    Quote Originally Posted by Lakegoat View Post
    I just looked at my (1-2) stock adapt presets. 0 is 81kpa, 1 is 246kpa, 2 is 411kpa. Should all three of those be 1700kpa for the drags? Your cars shift faster than my 4L80.
    Thanks
    are you talking about the 6l80e in your silverado? i didnt think the 4l80e had adapts you can change?

  10. #30
    Senior Tuner Lakegoat's Avatar
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    Yes, The 6L80.
    I shouldn't have mentioned the 4L80. In your video, it looked like your shifts were faster than my 4L and it is modified.
    Thanks
    2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
    2013 Silverado 5.3, 6L80k 8.8

  11. #31
    Senior Tuner Lakegoat's Avatar
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    Cmon, Tre-Cool what is the answer?
    2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
    2013 Silverado 5.3, 6L80k 8.8

  12. #32
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    sorry, missed that in answer.

    but the answer is yes. in mine i set them all to the same pressure. the only time i run a stepped pressure is for the 4-5 and 5-6 shifts. as they are primarily cruising gears for me.

  13. #33
    Senior Tuner Lakegoat's Avatar
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    Thank You!!!
    Is it summer in Perth? Hope I get to visit your country sometime.
    2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
    2013 Silverado 5.3, 6L80k 8.8

  14. #34
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    Let us know if you felt a change Lakegoat.
    Last edited by HeavyChevy305; 01-08-2016 at 04:08 PM.

  15. #35
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    I will check it out on my truck tomorrow if it isn't raining. My son with a '14 and a TVS2300 can really use it if it makes a big difference.
    2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
    2013 Silverado 5.3, 6L80k 8.8

  16. #36
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    Quote Originally Posted by Lakegoat View Post
    Thank You!!!
    Is it summer in Perth? Hope I get to visit your country sometime.
    yeah, summer here and too hot to be tuning cars. temps been averaging 38 degrees c for the past week or so and we've been having some big fires around the state too.

  17. #37
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    Quote Originally Posted by HeavyChevy305 View Post
    Let us know if you felt a change Lakegoat.
    I changed the oncoming presets in 1-2, 2-3, 3-4 all to 1700.000 kpa. Did the reset/preset, backed out of the driveway, and I was worried about it jerking into gear so I made sure and stop and then put it into drive---put my foot on the gas and it's not going anywhere. Looked down and its in neutral, lol.
    Thought I screwed up something.
    It makes a BIG difference in shifting. In other words, it shifts RIGHT NOW. I couldn't even tell if it was pulling timing between shifts. It's hard enough that I would not daily drive with the tune this way with a stock converter. I bet it's fun at the drags though. It will peel the tires on the first two shifts.
    I'm thinking that I will lower the numbers a lot and work up to see where I like it on the street.
    Thanks guys, What a good tip!
    Last edited by Lakegoat; 01-09-2016 at 10:59 AM.
    2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
    2013 Silverado 5.3, 6L80k 8.8

  18. #38
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    Quote Originally Posted by Lakegoat View Post
    I changed the oncoming presets in 1-2, 2-3, 3-4 all to 1700.000 kpa. Did the reset/preset, backed out of the driveway, and I was worried about it jerking into gear so I made sure and stop and then put it into drive---put my foot on the gas and it's not going anywhere. Looked down and its in neutral, lol.
    Thought I screwed up something.
    It makes a BIG difference in shifting. In other words, it shifts RIGHT NOW. I couldn't even tell if it was pulling timing between shifts. It's hard enough that I would not daily drive with the tune this way with a stock converter. I bet it's fun at the drags though. It will peel the tires on the first two shifts.
    I'm thinking that I will lower the numbers a lot and work up to see where I like it on the street.
    Thanks guys, What a good tip!
    I'm not sure what the trucks are like but in our cars, we have a couple of shift modes. what you could do is adjust your shift pressures a little for normal drive mode (x pattern), and then up the pressures even more in the tutd etc (pattern y) that's what i did for a customers car.

    kPa 0 150 300 450 600 N m
    -30 975 1075 1112.5 1550 1550
    -10 975 1075 1112.5 1550 1550
    20 975 1075 1112.5 1550 1550
    30 975 1075 1112.5 1550 1550
    125 975 1075 1112.5 1550 1550
    ?C

    then for your adapts set them up like this.
    kPa Pressure
    0 557.5
    1 1153.75
    2 1750

  19. #39
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    I can only assume that when you do the reset/preset then fast learn that you are doing it with the transmission up to temp right? Not sure if the car to truck makes a difference.

    I may try to tweak mine a little but nothing major. I know I need to log 2 certain pids in the display so I can follow the directions.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  20. #40
    Senior Tuner Lakegoat's Avatar
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    Quote Originally Posted by Tre-Cool View Post
    I'm not sure what the trucks are like but in our cars, we have a couple of shift modes. what you could do is adjust your shift pressures a little for normal drive mode (x pattern), and then up the pressures even more in the tutd etc (pattern y) that's what i did for a customers car.

    kPa 0 150 300 450 600 N m
    -30 975 1075 1112.5 1550 1550
    -10 975 1075 1112.5 1550 1550
    20 975 1075 1112.5 1550 1550
    30 975 1075 1112.5 1550 1550
    125 975 1075 1112.5 1550 1550
    ?C

    then for your adapts set them up like this.
    kPa Pressure
    0 557.5
    1 1153.75
    2 1750

    That would certainly make a difference. I had 0,1, and 2 all set to 1700. Details, details.
    I don't have TUTD, but manual mode and trailer mode. I will leave them at stock and play with the X Pattern. I can always just do a second tune for playing around. I'm going to try the stepped version and see how that feels.
    Thanks!!
    2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
    2013 Silverado 5.3, 6L80k 8.8