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TH400 and NP208 Help!!

Discussion in 'The Garage' started by kkyle69, Dec 12, 2005.

  1. kkyle69

    kkyle69 Registered Member

    Joined:
    Mar 9, 2005
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    Location:
    Huntsville, Texas
    I have a TH400/NP208 setup and can't figure this out. Truck runs fine in 4-LO, but motor hestitates and stalls in 2-HI and 4-HI. Fluids are new and full. Is this a tranny or T-case problem. Any ideas? I don't want to pull unless absolutely have to. :confused:
     
  2. jays68yak

    jays68yak 1/2 ton status

    Joined:
    Feb 27, 2003
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    Location:
    Gilroy, CA
    hows the motor run in general? My 350 was a pig with that setup. Tossed it and put in a 454 TBI motor and didnt have that problem again.
     
  3. kkyle69

    kkyle69 Registered Member

    Joined:
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    Location:
    Huntsville, Texas
    the motor runs goods, I put a whole new top end in it.
     

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