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making a spacer/adapter (700r4-2-np205)

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by jekbrown, Feb 2, 2002.

  1. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    hey gang, I have some machinist buddied that, if I can produce accurate drawings, can make me a spacer so I can mount my new np205 (th350 model adapter) to run behind my 700R4. Of course, to produce a good CAD drawing, I'd need to know what I needed. Is it as simple as making a steel "ring" that was the right thickness...and had the right holes for bolting it up and to accomodate the output shaft? I dont have the xcase in-hand yet...so I havent had a chance to look at it...but is it basically that simple? *any* input appreciated,

    J


    See the on-going build up of my '85 Jimmy! <a target="_blank" href=http://community.webshots.com/user/jekbrown>http://community.webshots.com/user/jekbrown</a>
     
  2. BurbinOR

    BurbinOR 3/4 ton status

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  3. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    holy poop...I am sposed to be picking a np205 up tomorow....you havent snagged a part from me AGAIN have ya blazzin?!?!?!? =p Just kidding...i basically posed the question because I wanted to make sure that the job was relatively intuitive....and there isnt some hidden ancient chinese secret or something to consider, as far as the design of the spacer goes. ;)

    J


    See the on-going build up of my '85 Jimmy! <a target="_blank" href=http://community.webshots.com/user/jekbrown>http://community.webshots.com/user/jekbrown</a>
     
  4. Heavymetal

    Heavymetal 1/2 ton status Premium Member

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    It is my understanding that the exsisting th350 adapter is a direct bolt on. The only problem is that the output shaft on the 700r4 is to long. The normal fix for this is getting the shorter shaft for the 700r4. Of course this would mean dis-assemble of the tranny. Makes me wonder if it wouldn't be more feasable to simple cut off the extra legnth. As long you don't heat it up to much it shouldn't change the temper of the steel. This is what I was planning on doing if I can't find a nv4500 for my ride. If this is not possible I would sure like to hear why. Anybody?

    Mike.

    <a target="_blank" href=http://coloradok5.com/gallery/view_album.pcgi?set_albumName=albun08>My Pics</a>
     
  5. shaggyk5

    shaggyk5 1/2 ton status

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    the spacer is a viable option, i wouldnt cut the shaft because then you lose available spline length. If you are dead seyt against the spacer then order the shaft from AA, its like 171 bucks, and then you have to have someone tear the whole tranny apart to put it in. This is why the spacer is a good alternate.

    -matt
    <font color=purple> "Stuff's only good for 2 things, degreasing engines and killing brain cells"</font color=purple>
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  6. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    yeah, im not a tranny tech, so I'd have to pay someone to put in a output shaft...that + the $171 4 the shaft sucks. Surely I can get a simple spacer made for under $100. I'll be getting the thing + th350 adapter tomorow...guess I'll take a look at it and see what makes sense and then bounce it off u guys before talking with my machinist buddies, thanks much for the responses, if anyone has anything to add...by all means!

    J


    See the on-going build up of my '85 Jimmy! <a target="_blank" href=http://community.webshots.com/user/jekbrown>http://community.webshots.com/user/jekbrown</a>
     
  7. Heavymetal

    Heavymetal 1/2 ton status Premium Member

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    I understand what you are saying, however the spacer is effectively doing the same thing. I guess I will have to dig them out and do a little comparing myself. Anybody else have experience with this?

    Mike.

    <a target="_blank" href=http://coloradok5.com/gallery/view_album.pcgi?set_albumName=albun08>My Pics</a>
     

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