Automatic transmission performance

Discussion in 'Trucks and Trailers' started by Drew Gemma, Mar 3, 2006.

  1. Drew Gemma

    Drew Gemma LawnSite Bronze Member
    Messages: 1,508

    How do you or can you improve the performance of an automatic transmission. Chip, program or modify? Just curious and does it help?
  2. Jpocket

    Jpocket LawnSite Silver Member
    Messages: 2,282

    Get a shift kit, that firms the shifts, and changes the shift points, and get a high performance valve body. You can get a Full Manual valve body, or one that allows you to selectively shift the trans on your own.
  3. Tvov

    Tvov LawnSite Bronze Member
    from CT
    Messages: 1,157

    One thing to consider is the rear end gearing of your vehicle. If is seems your transmission is working hard, it may be better to get different ratio rear end, like 4.10 or such.
  4. befnme

    befnme LawnSite Bronze Member
    Messages: 1,413

    just run around with the overdrive in the off position ... you will spend a little more in gas but save in the long run with transmission costs.
  5. Brianslawn

    Brianslawn LawnSite Silver Member
    Messages: 2,002

    they dont have chips. have my buddy baker do a mod to it. his homemade shift kits are unbelievable. second gear scratch guaranteed!
  6. Richard Martin

    Richard Martin LawnSite Fanatic
    Messages: 14,699

    What your looking for is a towing upgrade package. I say package because you can usually do a number of things to upgrade what you have now.

    This what I have done to my 1995 F-150:

    20,000 pound tranny cooler from Transdapt.
    Upgrade from open 3.08 gears to Traction-Lok (Ford's version of the Posi) 3.55 gears
    Added Roadmaster load carrying springs. These spring don't significantly jack the back of the truck up like "Add-A-Leaf" springs do and they are adjustable.

    I called the Ford AODE experts at Baumann Electronic Controls and inquired about upgrades to my 4R70W tranny. They asked me a butt-load of questions about the use of the truck, weight pulled, how it acts when pulling and non-pulling, how often I change the fluid etc. and then they said the tranny was fine and to just continue what I was doing without changing anything in the tranny.

    These guys had a golden opportunity to sell me the store if they had wanted to but they told me the truth instead. If you have a Ford check them out at
  7. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Messages: 2,613

    If your truck is a diesel, these guys can hook you up. Usually upgrading a transmissions performance includes a new valve body and torque convertor and shift kit. Pricing is unbelievable when it comes to upgrading transmissions but you get what you pay for. Dont just buy a shift kit and expect it to perform like a built tranny. These companies also offer fully built transmissions, once your tranny is built you can add power to the engine via chips, programmers and bolt in upgrades. Happy bombing

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