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203 to 208 conversion

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 86454K30, Jan 2, 2007.

  1. 86454K30

    86454K30 1/2 ton status Premium Member

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    Location:
    Spokane Washington
    I have a 79 K20 with a TH400/203 combo. Can I bolt in a 208 tcase without transmission modifications? I know I need drivelines and such. But, will the 208 adaptor bolt up to TH400?

    Thanks

    Larry
     
  2. sweetk30

    sweetk30 professional hooker Premium Member

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    Location:
    horseheads , ny 14845
    nope will bolt up but need longer tail shaft. as long as the 208 is from a 400 tranny.
     
  3. imiceman44

    imiceman44 1 ton status

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    Location:
    Sacramento, CA
    You probably need to swap with me. :D
    I have the th400 with 208, I want the 203 :D

    I even have someone coming down from Washington this thursday but he is in Tacoma :(
     

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