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32 spline 205

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by R72K5, Mar 26, 2003.

  1. R72K5

    R72K5 Banned

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    ok when was official first year of 32 spline input 205 case for 465 tranny ?

    also on the input of the case is the 32 spline th400 shaft same as the 32 spline 80's 465 shaft ?

    thanks
     
  2. nvrenuf

    nvrenuf NONE shall pass! Premium Member

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    I'm not 100% sure but I belive it's 85. I think at the same time GM went to the round bolt pattern adapter the 4spd / 205 set ups changed to 32 spline.

    As for the 32 spline input being the same from 4spd and TH400, yes - if they are both the round pattern t-case. There was a shorter version 32 spline input used for the figure 8 Th400 application 205. ORD has a good tech article on the different input shafts.
     
  3. R72K5

    R72K5 Banned

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    im probably screwed then as far as shaft, but its an 83 for sure, so most likely the old firgure 8 pattern, a 205 will go with figure 8 also right ?

    thanks
     
  4. R72K5

    R72K5 Banned

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    ok its got straight across crossmember
     
  5. thatK30guy

    thatK30guy 1 ton status Premium Member

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    [ QUOTE ]
    I'm not 100% sure but I belive it's 85. I think at the same time GM went to the round bolt pattern adapter the 4spd / 205 set ups changed to 32 spline.

    As for the 32 spline input being the same from 4spd and TH400, yes - if they are both the round pattern t-case. There was a shorter version 32 spline input used for the figure 8 Th400 application 205. ORD has a good tech article on the different input shafts.


    [/ QUOTE ]

    You are correct on every info here. /forums/images/graemlins/thumb.gif
     
  6. nvrenuf

    nvrenuf NONE shall pass! Premium Member

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    An 83 205 would use the figure 8 adapter. You're not totally out of the game, you could get the short female input shaft from ORD. Once you've got that either have the input hole on the 205 bored bigger to accept the OE bearing or buy an "adapter" bearing and make no case modifications.

    As I said before I really think the early 32 spline 205 would bolt up to a 32 spline 465 using the figure 8 4spd adapter. **BUT I have never actually done it**
     
  7. R72K5

    R72K5 Banned

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    i just solve problem by getting a 465 205 case before 85 /forums/images/graemlins/laugh.gif right ?
     
  8. thatK30guy

    thatK30guy 1 ton status Premium Member

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    10 spline 465 = before '85 np205 t-case
    32 spline 465 = '85 to '91 np205 t-case
     
  9. R72K5

    R72K5 Banned

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    83 208 with 465 is 10 spline, right ?
     
  10. thatK30guy

    thatK30guy 1 ton status Premium Member

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    No, any 465 that was mated to a 208 from '81 on up will be 32 splines. Just keep in mind that there was never a 10 spline 208 t-case. /forums/images/graemlins/thumb.gif
     
  11. R72K5

    R72K5 Banned

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    ok now im lost, its changed from 85-up 465 being 32 spline to some 81--84 being 32 spline also ?

    so only the 205 waited til 85 to be 32 spline ? 208 way before that ??


    hmmmm......

    thanks
     
  12. nvrenuf

    nvrenuf NONE shall pass! Premium Member

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    You are correct (sorry, I think I typed too fast and was little vague /forums/images/graemlins/crazy.gif ).

    Pre-85 465/205 combos = 10 spline
    85-on 465/205 combos = 32 spline
    All 465/208 combos = 32 spline

    Sorry, hope this helps clear this up.
     
  13. thatK30guy

    thatK30guy 1 ton status Premium Member

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    [ QUOTE ]
    ok now im lost, its changed from 85-up 465 being 32 spline to some 81--84 being 32 spline also ?

    so only the 205 waited til 85 to be 32 spline ? 208 way before that ??


    hmmmm......

    thanks


    [/ QUOTE ]

    Go back and read my post again. /forums/images/graemlins/wink.gif

    [ QUOTE ]
    No, any 465 that was mated to a 208 from '81 on up will be 32 splines. Just keep in mind that there was never a 10 spline 208 t-case.

    [/ QUOTE ]

    I said that "any 465 that was mated to a 208 from '81 on up will be 32 splines."

    The K5, 10, and 20 hold true to the above statement.

    Only K30's had the 10 and 32 spline 465's with the year split between '84 and '85.

    Understood now? /forums/images/graemlins/thumb.gif
     
  14. R72K5

    R72K5 Banned

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    ok gotcha, the 85 thing is what messed it all up, so that doesnt apply to 208s then ok,
    wierd stuff,

    hmm so i need a different 465 and all, hmm.. how crappy,. how do i unload a good 465 208 combo ?? i take it that they are worthless since most ppl want the 205 combos, i want the 465 though, 4 speeds rule /forums/images/graemlins/laugh.gif


    thanks
     
  15. thatK30guy

    thatK30guy 1 ton status Premium Member

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    You can keep your 32 spline 465 and sell the 208.

    All you have to do is find a 205 from between '85 to '91 and it will mate right up to your current 465. Just make sure you get the adaptor, too.
     
  16. R72K5

    R72K5 Banned

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    what about crossmember, will the flat one work ?

    thanks
     
  17. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Nope. Gotta use the '85 and newer crossmember. The '84 and older are the flat style like you are asking about and the '85 and newer are a "double hump".
    Reason for the flat and "double hump" lies in the adaptors themselves.
    The '84 and older are a "tall" version and the '85 and newer are "short."

    So, to use an '85 and newer 205, which will use the "short" adaptor, you need the "double hump" '85 to '91 crossmember.

    Get all that? I know it sounds confusing, but thats what happens when GM messes with stuff and causes more headaches. /forums/images/graemlins/tongue.gif
     

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