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chevy or ford 205

Discussion in 'The Garage' started by freeflow, Jan 19, 2006.

  1. freeflow

    freeflow 1/2 ton status

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    OK Im starting to work on the tranny, 1984 turbo 400 2wd, i removed the rear yoke and tailshaft and from the rear face of the tranny to the end of the output shaft it is 4-3/4", now if i understand it right is that the same as a 4x4 400 trans that would have a 205 mounted to it?

    If not what adapter would i need, or new ouput shaft- im gonna rebuild the trans anyway, firmer shifts and stuff.

    And what are the pros and cons of going with a ford 205 case and front axle instead of the chevy 205, and will the ford bolt up the same as a chevy case?

    For some reason this area is confusing me lol,

    http://www.cardomain.com/ride/2170477 - a few pics of the progress, i got more pics just gotta upload them.

    thanks for the help
    brad.
     
  2. 6.2puller

    6.2puller 1/2 ton status

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    Ford is a 31 spline input with the same round bolt pattern as the late chevy 205s with the 32 spline input so yes it "bolts" up but you would have to end up with a 31 spline TH400 (not sure thats possable) or put a 32 spline input in the ford 205.
     
  3. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    ford tcase/axle really only makes sense if you are going with a doubler which would use a 31-spline intermediate shaft between the 203 and 205.

    j
     
  4. thebigdaddyof2

    thebigdaddyof2 1/2 ton status

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    Yep, the shaft stickout of a 205 version 400 is about 4.5".
    You may need to trim a small amount to match.
    Also, make sure to check the amount of spline engagement!

    If you are wanting to install just a 205 behind your 400, find the Chevy 205 with a 32 spline input and matching adaptor. There are two versions. The older "Fig 8" style and the newer "round" pattern. Make sure the case and the adaptor match.

    Like stated, really the only time the Ford 205 is wisely used is when a DCA (Doubler) is installed. You must spec the kit to fit the Ford 205. This will allow you to use the OEM, 31 spline input gear of the Ford 205. Of course, then you will need a driver's side front axle.

    If you are going to do a dual case setup AND you're going to rebuild your 400, you may want to find the 203 version output shaft, the range box and matching adaptor for the 400. This will give you the shortest setup with a doubler.
     
  5. u2slow

    u2slow 1/2 ton status

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    Only the 80-84 NP205 (& adapter) work with the 4.5" stickout.

    The 85-91 style with the round pattern uses the 2.5" stickout. (same as NP208/241 type.)
     
  6. divorced

    divorced 3/4 ton status

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    I thought about using a divorced Ford 205 in my next truck because Ford Dana 60's seem to be easier to find than the GM version, and often a few hundred dollars less... plus the hi-pinion is cool.
     
  7. freeflow

    freeflow 1/2 ton status

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    k so i need to find a pre 1984 205 case then. How much is a rebuild kit for a 205 case? and is it easy 2 rebuild- im not scared of doing anything lol just finding out.

    brad
     
  8. goldwing2000

    goldwing2000 Guest

  9. u2slow

    u2slow 1/2 ton status

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    Are you sure you want to rebuild? Most work fine as they are. ;)

    Consider you are looking for a fairly unique version of the 205. There is a good chance it will come with a TH400. That said, you improve your odds of finding one since you can use any TH400/205 combo made from 80-90.
     

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