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Torque Converter for a Th400 (Help)

Discussion in 'The Garage' started by adamforsythe, Apr 2, 2005.

  1. adamforsythe

    adamforsythe 1/2 ton status

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    Hello,
    As many of you know I have a Th350 and I was planning on putting a 2900 stall Torque Converter in there. Well I may be changing my plans. I may be buying a TH400/NP208 combo. Well I need new Torque Converter my stock one will not work in a TH400 nor will my 2900 stall. So what do you guys think about putting a 1700-2000 stall Torque Converter in a truck. I want a Torque Converter that wont burn my tranny up. But I want to be able to launch and have people that are in the truck go what the F**k was that?
     
  2. R72K5

    R72K5 Banned

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    th350 and 400 interchange converters


    converter wont burn the trans up, a bad pump or low fluid or etc would

    2900 is damn lot of stall dang.,

    how much cam and what gear and such you runnin ?

    good luck
     
  3. crazy427

    crazy427 1/2 ton status

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    I agree :cool1:
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    Sure a converter will burn a trans up, thats one of the reasons to run a tranny cooler.

    If you are in the stall speed of the converter all the time (like cruise RPM's are 2800 and you are running 2800 stall) AND its not a locking converter, you will generate a LOT more heat than you would with a stall nowhere near your cruise RPM.
     
  5. Ryan B.

    Ryan B. 3/4 ton status GMOTM Winner

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    I think i replied to your last post..
    a 1700-2000 stall converter is much more reasonable than a 3,000 stall converter.. its probably a better idea because if your cruising on the freeway you should be above 2,000 or so and the converter won't be flashing and slipping.
    I run a 3000-3200 stall in my camaro (cam is 260 degrees duration @ .050 3K-7K rpms) and its sweet for footbraking it and launching it at the track, but its not real street driving friendly especially in stop and go traffic..
    i put a slightly higher than stock stall converter in my k5, and i can't really footbrake it and stall it up in 4wd, like i can in 2wd to do a brakestand or launch it. However when i'm wedged in some rocks in 4wd i can feel the tranny slipping more and you have to rev it up higher to overcome the stall.. it creates quite a bit more heat.. i've seen guys in the rocks with a 3000 stall once it hits that rpm it shockloads the axles and breaks ujoints. :blush:
     

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