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4L60E firmer shifts

Discussion in 'High Performance Mods' started by 5.3silverado, May 24, 2012.

  1. Zembonez

    Zembonez живи свободно или умри

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    My 4L60 will chirp the tires into second if I am on the gas hard. A tune does wonders
     
  2. thunderstruck

    thunderstruck This message exists only to take up space.

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  3. 5.3silverado

    5.3silverado I'm too LAZY to Choose a Custom Title!!!

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    I got a shift kit from Tru Tech Transmission Along with sonnex servo 4th gear and new separated plate and pressure control valve. It shifts nice and firm now.

    Sent from my XT901 using Tapatalk 2
     
  4. nixrox

    nixrox I'm NEW... What now?

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    Your truck is a 2004 and I'm guessing it has more than 100,000 miles on it. If you do anything to increase the shift point RPMs, or make the shifts 'harder', you will be putting a lot of extra pressure on your clutch packs. They are getting pretty worn right now and it will cause an early failure if you do not also replace all the wear parts inside.
    You might be better off going to your local 'Pick-r-Part' and get another exact same transmission - rebuild it and just swap them out. They only cost $129.00 here.
     
  5. Cowboy Cadillac

    Cowboy Cadillac Ain't no trash in my trailer!

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    [​IMG]


    What happens when your upgraded 4L65Etrans shift too hard....
     
  6. 5.3silverado

    5.3silverado I'm too LAZY to Choose a Custom Title!!!

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    Got about 20,000 on tranny with a shift kit installed, 181,000 total miles and still works perfect.

    Sent from my SM-G920R4 using Tapatalk
     
  7. Cowboy Cadillac

    Cowboy Cadillac Ain't no trash in my trailer!

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    I had 18000kms/ 11200miles on my rebuilt before I sheared the output shaft. Upgraded to 4L65 planetarys, red devil cutches, beast sunshell, HD2 shift kit 1800 stall and vette servo. Blew the tires off when it shifted to second. Way awesome till it grenaded. Had current trans built same way but with a 2200 stall, haven't had any issues, mind you I'm a little easier on the skinny pedal now a days....
     

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