Torque Converter, Locked Or Unlocked

Discussion in 'Transmission, Axle and Drivetrain' started by Curious George, Mar 28, 2017.

  1. Curious George

    At wide open throttle will a car with a locking torque converter post better times with or without it being locked?
     
    Curious George, Mar 28, 2017
    #1
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  2. SCF/HAIC Staff Member Admin

    Once you hit the stall speed there is nothing to be gained so far as torque multiplication goes. You're only generating more heat at that point. Unlocked in 1-2 (in transmissions that allow lock up in those gears) because you get through them so far that lockup wastes precious time. You want to lock a second or two into 3rd gear will usually shave time off track times.
     
    SCF/HAIC, Mar 28, 2017
    #2

  3. vinces427bb Staff Member

    it depends on the car and the HP/torque it's making at what rpm...
    basically if the car can pull the OD-gear without pulling the rpms out of the power band it would go faster
    your results may vary o_O
     
    vinces427bb, Mar 28, 2017
    #3

  4. SBCSupercharged

    So many variables its hard to say like where is peak power, what the gearing is and what the stall is. Only way to know for your combo is trying both on the same night with enough cool down time between runs.
     
    SBCSupercharged, Mar 29, 2017
    #4

  5. Whippled

    One thing to keep in mind is if the torque converter lockup can hold up to your power levels. If its not designed for it then you're going to wear out the clutch real fast.
     
    Whippled, Apr 3, 2017
    #5

  6. SCF/HAIC Staff Member Admin

    A lot of factory converters can't handle it.
     
    SCF/HAIC, Apr 3, 2017
    #6

  7. LS Crazy

    LS Crazy, Apr 5, 2017
    #7

  8. vinces427bb Staff Member

    vinces427bb, Apr 5, 2017
    #8

  9. SCF/HAIC Staff Member Admin

    No kidding, 4000HP on a Hughes lockup.... damn!
     
    SCF/HAIC, Apr 6, 2017
    #9

  10. Camaro Blues

    Camaro Blues, Apr 7, 2017
    #10

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