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Dana 20 and 70 into blazer?

G

gm guy

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Vancouver Island but work in Ft Mcmurray Alberta C
I just picked up a 63 Jeep dually that has a T-18,??? t-case, Dana 20 rear, and Dana 70 front.

I've been told this is a closed knucle front end. What does that meen?

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Sorry for the crapy pics I'll get better ones so hopefully someone can confirm that these are dana 20 and 70 axles. Could I use the 20 for a sigle wheel in rear or only dually? Can I buy wheels that fit the axles or are they obsolete. Good score or waste of time and money?
 
That shifter is awfully long! Anyway, you need redo the pic post. Stack 'em vertically instead of horizontally.
 
Chances are you have a Dana 70 rear and a Dana 20 front. If it is a Dana 20 front that is what CJ had in them I think not good for a 5K rig. There are a few guys on here that run Dana 70. You would have to change the spring perches and shock mounts but you have to do that with most.

Ira
 
There is a Dana 20 transfer case but no Dana 20 axle.

I have never seen a J-truck dually before. Anyway, closed knuckle means that the front ujoints are encased in little balls on the ends of the axle, and the knuckles pivot on these. I highly doubt that has discs on the front, so my advice would be to just forget about this swap.

However, what kind of winch is that on the front? you could probably make that work.
 
parts for the 70 and 44 are everywhere. Strengthwise, the 70 is pretty much equilivant to a gm 14bff and the 44 is about that of a 10b. Good rearend, decent front but if its closed knuckle, id stray away from that...plus you should have a 44 or 10b up front in your blazer anyway. The rear swap could be worth the time and money, id forget about doing anything with that front end...

As for the trans, i don't know much about that sorta stuff...i know a little about gm autos, but thats about it.
 
There is a big following for the J truck duallys, You can recover what you have in to it. IMHO, I agree with the other inputs that it is not a good doner vehicle for a K5. Keep looking.
 
transmission is a T-98 model 20 ( dana ) transfercase, rear dana 70 found in the j3000 and 4000 trucks, all fronts are dana 44's. where are you located very intersted in some parts or hole truck depending on location, jason.
 
Being a 63', Dont know for sure but the 44 front is prob. closed knuckel with smaller u-joints. The 70 rear is prob. a low spline count axle. Niether axle is a desirable unit under a fullsize chevy. I say sell the truck/ parts to some jeep freak as this is an un-comon truck and the funds could go to cool mods/ parts for your k5
 
trans is wanted by many bronco owners as it is a good manual swap trans umm otherwise i dunno when i had a bronco i was looking for one but it is since long gone
 
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