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Is the JET TH400 a direct bolt-in for the 700R4??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Brian 89KBlazer, Apr 19, 2001.

  1. Brian 89KBlazer

    Brian 89KBlazer 1/2 ton status

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    Looking at the JET Transmission site & it lists a TH-400 for 80-later 4wd with 208 t-case. Would this be a direct bolt-in for the 700-R4 with an NP 241 bolted to it?

    Thanks
    Brian
    89KBlazer
     
  2. Wheels

    Wheels 1/2 ton status

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    The output shaft bolt pattern on the 400 and 700 are different. The 700 has a 4 bolt square pattern and the 400 has a 8 bolt round pattern. Need the t-case that mate to the 400.
     
  3. Brian 89KBlazer

    Brian 89KBlazer 1/2 ton status

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    That's what I said. The 400 is for an NP 208 application and the NP208 is the same bolt pattern as an NP 241, isn't it?

    Brian
    89KBlazer
     
  4. CK5

    CK5 In my underwear Administrator Premium Member GMOTM Winner Author

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    Call Stephen Watson at offroaddesign.com and ask him, I bet he would know.

    Steve
    [​IMG]
    Mall-Running poseur 4x4 with curb-feelers
     
  5. ftn96

    ftn96 1/2 ton status

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    You'll need an adapter.
    http://www.nashvillek5.freeservers.com
     
  6. ftn96

    ftn96 1/2 ton status

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    but if the 400 is for a 208 then it bolt up to the 241. you'll need to move your crossmember and chang the length on your driveshaft.

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-TCI 700R4-241-33" BFGs-10 bolts w/4.10's,
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  7. ftn96

    ftn96 1/2 ton status

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    Hey Wheels, I thought the 400 came with 4 bolt and 6 bolt pattern, not 4 and 8.
    ??

    Will work for beer, parts and tools.
    90 Jimmy 350TBI-TCI 700R4-241-33" BFGs-10 bolts w/4.10's,
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  8. Brian 89KBlazer

    Brian 89KBlazer 1/2 ton status

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    Thanks Brandon

    That seemed to make sense to me too. The crossmember won't be a problem. I'm buiding a frame from scratch so everything will be wherever I want it! [​IMG][​IMG]

    Just did a search on the board & Bigburb (Harvey) got me thinking of trying Bowtie Overdrive. Problem is they're on US west coast & I'm Canadian East Coast! [​IMG]

    How much better is the Bowtie than a JET tranny?? or is it?

    Thanks again
    Brian
    89KBlazer
     

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