T-case, part II........ - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 06-30-2001, 11:36 AM
Kendog454
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T-case, part II........

Is it possible to mate a NP 205 transfer case to a 10 bolt front axle? I ask because my 208 is just about done and if I'm gonna fix it, I may as well go and get the beefiest thing I can find, because I only want to do it once. What will I need to do the swap, and can I mate it to the front driveshaft that I have, or will I need one from a Dana 60 or something? And are the yolks different sizes, or will they bolt up?

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post #2 of (permalink) Old 06-30-2001, 12:00 PM
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Re: T-case, part II........

What you didn't say is weather your running an Auto or a Manual. From hearing the 208 I take its an Auto and probably a Turbo350 or a 700R4. Anyway, if you want the 205 you are going to have to find an adapter at a wreckers(good luck!!!!) because the 205's were only on all the trany's for onee year 1980 or 81 I forget. Anyway, I don't think a 205 came on a TH350 any other time so you best bet is to call advanced adapters and get one from them. As for the drive shaft.....yeah there the same as a 208.

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post #3 of (permalink) Old 06-30-2001, 06:55 PM
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Re: T-case, part II........

My tranny is the SM465.....will the splines mate if I get a tcase from an auto?

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post #4 of (permalink) Old 06-30-2001, 07:16 PM
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Re: T-case, part II........

Nope. Manual tranny outputshafts are 10 splined while autos are 30-31 splined.

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post #5 of (permalink) Old 06-30-2001, 07:48 PM
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Re: T-case, part II........

Ive also got the sm465 and Im wondering why theres such a big dif in the # of splinse between the manual and the autos on the out put shaft?

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post #6 of (permalink) Old 06-30-2001, 08:15 PM
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Re: T-case, part II........

So If I find a NP 205 from any year SM465, it'll match right up? If I should happen to find one, I wont need any kind of adaptor, right? I really wanna ****can my 208.....will I need to get a new CV joint and any related hardware, or can I just swap out my 208 and bolt up the existing front driveshaft and CV joint and soforth?
post #7 of (permalink) Old 07-01-2001, 01:22 AM
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Re: T-case, part II........

I was always lead to belive that the SM456's always came with the 205's. Maybe that was just up untill 88???anyway, if you find a 205 it more than likly came of a 456 so just snag the adatper at the same time. That would be your best bet!

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post #8 of (permalink) Old 07-01-2001, 09:08 AM
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Re: T-case, part II........

You should be ok if you snag the t-case and adapter together. I think you might to have your drive shaft shortned to use a 205 in place of a 208, but Im not positive. You should be able to find a 205 from about ~80 down in half tons and probally some mid-80's 3/4 and 1 tons. Where are you at? I have an sm465/205 combo I would split up?

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post #9 of (permalink) Old 07-03-2001, 01:46 PM
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Re: T-case, part II........

GM surely shortchanged us with their 3/4 tons....I have a 1985 K 20 Scottsdale, which came with the wonderful NP 208. I live on Long Island, New York and I'd be interested to hear more about your offer.

post #10 of (permalink) Old 07-03-2001, 01:48 PM
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Re: T-case, part II........

GM certainly shortchanged us on 3/4 tons...I have an 85 K 20, 465/208. I live on Long Island New York and would be interested in hearing more about your offer.

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