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tranny/t-case question?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ironnut, Jan 24, 2005.

  1. ironnut

    ironnut Registered Member

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    Location:
    Missoula, MT/Redmond, WA
    I swapped out a np203 for a np205 a couple years ago behind my th350. Im having problems w/ the tranny fluid being pushed into the t-case then t-case overflowss and make mess. Ill go through 3 qts of tranny fluid per week through the t-case. I cannot remember if their was a seal I could replace between the two. If so is it as easy as unbolt the t-case and swap seals??? Thanks
     
  2. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    IIRC there is a seal and a bearing in the adapter. not sure what side the seal is on though.
     
  3. Cricket

    Cricket 3/4 ton status

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    There should be a big rubber o-ring on the TH350 tail end unless the 205 and 203 adapters are different that way.
     
  4. divorced

    divorced 3/4 ton status

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    A 205 I had had a seal on each side. One held back tranny fluid and the other held back t-case oil.
     
  5. Mav2u

    Mav2u 1/2 ton status

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    is that the same with a 700R4 and a NP241? Can they swap or tranny fluid drain into the T-case? Sometimes I wonder about this since my T-case is always full and the tranny seems to be low a little every few months.

    Not to mention the t-case drips out the rear seal no matter how many times I change that stupid seal. guess NP241 is a leaker!
     

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