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Th400 to Ford 205

Discussion in 'The Garage' started by b454rat, Jan 9, 2006.

  1. b454rat

    b454rat 1/2 ton status Premium Member

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    Gm TH400, Ford 205, What Ford transfer case and adaptor do I need to hook these two together?? Anything else??
     
  2. sled_dog

    sled_dog 1 ton status

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    a new output shaft for the 400 or a new input for the tcase cause as it sits, there is no way they are going together. TH400 has a 32 spline out, Ford 205 has a 31 spline input. Could get a doubler setup and use a Chevy 203 with 32 spline input(good luck finding). I have a Ford 205 behind a TH350 but there is a Chevy 203 in between.
     
  3. atho

    atho 1/2 ton status

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    I think Ford cases have the same 6 bolt pattern as newer chevy's, but it might clock it weird.
     
  4. b454rat

    b454rat 1/2 ton status Premium Member

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    The input should't be a problem, but what about an adaptor?? Use the Ford one, the 400/205 one?? Never messed with Ford stuff other than axles.....
     
  5. Jagged

    Jagged 1 ton status

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    Don't fords have driver's side drop?
     
  6. sled_dog

    sled_dog 1 ton status

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    yes but if he has a Ford front axle its not an issue(thus why I have a Ford 205, high pinion Dana 60).

    I do believe the Ford 205 is the same bolt pattern as the newer Chevy NP205s. Th400-205 adapter from a late 80s early 90s truck would be the best bet.
     
  7. b454rat

    b454rat 1/2 ton status Premium Member

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    I think a friend still has his adaptor, sold the trans but better get the adaptor back. I actually have a Gm 60 in the front of my 89 that I think I'm gonna sell, a freind has an HP60 that is ready to go. I'm not going to be doing any hardcore stuff, so thought about a 241 with a SYE. That way my friggin VSS will work. And to think, when I first bought this truck, it had a rebuilt 400/241, didn't think and couldn't use it at the time, so I sold it. Now I might need it. Figures. Is the 400/205 adaptor the only one that will work?? 4-speeds are different?
     
  8. sled_dog

    sled_dog 1 ton status

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    way different.

    4 speed 241 would be perfect spline count though ;). I have a driver side drop 241 that I was going to use for my S10 with Ford front axle, but I put the doubler in instead. And no sorry don't want to sell it, want to hold onto it since its a 32 spline input unit.
     
  9. b454rat

    b454rat 1/2 ton status Premium Member

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    I think I can find one, just havta hunt the yards. I know he has one off a 91 with a 4l80/241, but it's still in the truck and I don't think he will seperate it. Might go there tomorrow, so I'll see what I can find. Thanks for the info.
     
  10. NorthWestFab

    NorthWestFab 1/2 ton status

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    The easiest/shortest method to mate the two is using a TH400 that was mated orignally to a NP203, then we can CNC a new adaptor for the 400/Ford 205 and supply the correct parts to allow them to mate together.

    the reason I suggest the 203 version is the adaptor is only 1.25" thick, going with somthing with a longer tailshaft is possible as well, just not as preferable. The one to avoid is the 205 version 400 tailshaft - its really quite long, the NP208 version would be my next choice over the 203 type. Give us a call at the shop and we can get everything sorted out you might need or at least point you in the right direction.

    The round pattern GM cases and fords are in a completly different rotation.

    -Kyle.
     

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