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700r4 in place of an SM465 w/205 case? Possible???

Discussion in 'The Garage' started by 80blackgmc, Nov 23, 2004.

  1. 80blackgmc

    80blackgmc Registered Member

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    Hey guys. I was told it would be relativley easy to put a 700r4 in place of a sm465, and still use my transfercase and all my driveshafts. Is this possible? If so, what adapters do I need and where can I get them from? I like my 4 speed, but I hate no overdrive.
     
  2. mechted

    mechted 1 ton status Premium Member

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    the transfer case will have the wrong input on it (10 spline if pre 84ish... 32 spline if post) and the driveshafts may be the wrong length (not sure)
    there are a couple ways to mate 700r4s and 205s... go here: http://coloradok5.com/forums/showflat.php?Cat=&Board=garage&Number=1251980&Forum=f30&Words=700r4%20205&Searchpage=0&Limit=25&Main=1251824&Search=true&where=bodysub&Name=&daterange=1&newerval=1&newertype=w&olderval=&oldertype=&bodyprev=#Post1251980
    but you will need to change the input of the 205 to 27 spline (relatively common) or find a th350 version 205
     
  3. 84_Chevy_K10

    84_Chevy_K10 Banned

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    10 spline is 80 and older, 32 spline is 82-up

    If your 205 is 10 spline you'll need to swap to a 27 spline input to run a 700R4.

    If your 205 is 32 spline you'll need a different case and a 27 spline input.

    After that the best way to bolt in a 700R4 is with a spacer.

    You will need to lengthen your front and shorten your rear driveshaft.
     
  4. big83chevy4x4

    big83chevy4x4 3/4 ton status

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  5. darkshadow

    darkshadow 1 ton status

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    they came in 80's fleat order trucks only.

    buddy found a 85 crew cab with a 700/205 combo, for sale from a local hydro company
     
  6. 80blackgmc

    80blackgmc Registered Member

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    Cool, thanks. And if I get this, my 205 case should be in the same location? So I can keep my stock driveshafts? Thanks a lot once again guys.
     
  7. darkshadow

    darkshadow 1 ton status

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    well that would depend on the leanth of a 700 vs a 465, that i do not know off hand.

    and you will need the 700/205 adapter/conector i am tired and cant think of what its called. /forums/images/graemlins/dunno.gif
     

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