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Low Stall Converter?

Discussion in 'All Other Transmissions' started by FellowTraveler, Feb 25, 2018.

  1. FellowTraveler

    FellowTraveler Well-Known Member

    2,252
    1,250
    Sep 29, 2014
    Nature Coast
    I was wondering if there is an information on how law a stall converter can you go before the vehicles brakes are overwhelmed?
     
  2. THEFERMANATOR

    THEFERMANATOR FRANKENBURBAN Staff Member Lead Moderator

    8,978
    2,306
    May 9, 2008
    ZEPHYRHILLS FL
    Theres many factors that play into this, not just stall speed. A GOOD converter shop can build a converter with better torque multiplication which in my experience allows for a lower stall, but won't push through the brakes. Good builders can set them up loose at idle, but make them rapidly come in. I know my current converter in mine is surprisingly loose at idle, but around 1200 rpm's it really starts coming in hard, but come 1800 it will stall no more(I can power brake it to 1800 at around 4lbs of boost, pressing on it harder won't increase the rpm's, only push the boost to 15-18 lbs of boost in a hurry, then stuff goes bang when I try to launch it there). The stock converter actually pushed harder at idle, but it maintained about the same amount of coupling up to around 1800, and bone stock it would stall up to around 2200-2350(but never really locked in solid until lockup whereas my current converter locks in solid above the stall point). I've heard of guys going as low as 1000-1200 for stall speed on off road crawlers where they need it to pull at idle. Then your problem becomes keeping it cool as cooler flow is greatly reduced at idle.
     
    WarWagon and FellowTraveler like this.
  3. FellowTraveler

    FellowTraveler Well-Known Member

    2,252
    1,250
    Sep 29, 2014
    Nature Coast
    As always FERM thanks..
     

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