4WD C6

[cep62]

What I have is a very good engine and tranny coming out af a '79 Bronco thats too rusty to drive.(even for me)
Going into a '77 shortbox , that has a not so good engine and tranny.

The Bronco has a long tail shaft , the shortbox is standard length.

The question is, is there enough spline on the long tail shaft so I can cut it off and mate it to the truck's T case .
The reason is, I'll have to relocate the T case rearward (time ) and make up a new rear driveshaft (time and money)

This isn't a daily driver , just a plow truck with limited road miles , and winter is coming.

[basketcase0302]

by cep62 » Sat Oct 29, 2016 8:20 pm

What I have is a very good engine and tranny coming out af a '79 Bronco thats too rusty to drive.(even for me)
Going into a '77 shortbox , that has a not so good engine and tranny.

The Bronco has a long tail shaft , the shortbox is standard length.

The question is, is there enough spline on the long tail shaft so I can cut it off and mate it to the truck's T case .
The reason is, I'll have to relocate the T case rearward (time ) and make up a new rear driveshaft (time and money)

This isn't a daily driver , just a plow truck with limited road miles , and winter is coming.

Aren't you dealing with two different C-6 applications here?
Isn't the 79' a "mated" C-6 bolted right to the NP-203 transfer case?
And isn't your bump a "divorced" transfer case?

I can answer from my C-6 2WD installation that I put in my F-350, that the C-6 comes in both short and long shaft's and the case on each has to be specific to the shaft. I found that out the hard way and wound up replacing my driveshafts, (out of balance original anyway) to correct my length issue.

This might help:
http://www.monstertransmission.com/C6-4 ... ep_55.html

[cep62]

Aren't you dealing with two different C-6 applications here?
Isn't the 79' a "mated" C-6 bolted right to the NP-203 transfer case?
And isn't your bump a "divorced" transfer case?

Nope.its going into a '77 pick up, I only posted the question here because we get more traffic than the "dent" site.
Although , your link to Monster Transmission answered my question. so thank you for that.
Their picture show that the splines don't go deep enough to cut back. I didn't think they would but I had some hope.
So now I'll plan on moving the T case back and making up another rear driveshaft.

And my t case is a NP 205 which is the part time gear drive case , the 203 is the full time chain drive case.

Actually my bump is a F100 so it has a mated single speed t case (no low range)
The F250s came with the divorced t case.

[basketcase0302]

Not that much work really once you get started, (coming for a guy who's built custom frame 4 X 4's (swamp buggies with two tranny's bolted to transfer case's).
Congrats on finding a 205 case, (unlike the wimpy 203 chain driven case).

[cep62]

Congrats on finding a 205 case, (unlike the wimpy 203 chain driven case).

Thats seems to have been easy, I have a few more stacked on a shelf.
In fact I think I've only had one 203 in my possession .

Not that much work really once you get started

I know ,it's the getting finished before snow flies.
But I work better under pressure.