q's about transfer cases and driveshaft(rear)

[benoit454]

Ok first off I have an 86 swb truck, 350 now with a 700r4 trans.

What transfer case do I have? I think it's aluminum, how can I be sure as to which it is? I can get pictures once it stops raining.

Ok now the tranny is slipping so i picked up a th400 and transfer case, supposedly out of a camper special 87 year model. It has an iron case because it's pretty damn heavy.

A little more info on that setup is..

it has the transmission to transfer case adapter or whatever, with the corssmember made to that, or bolted to it, and it's made like a normal crossmember, flat goes from frame rail to frame rail and bolts on, but it also goes back like under the transfer case, and has another crossmember, that bolts up the same way.

So in short the crossmember on it is H shaped.

What transfer case does the th400 have? how can I tell.?

Here's more info, the th400 transfer case has a bolt on style rear driveshaft, meaning the u joint bolts on with the u bolts, then the driveshaft hooks to the u joint. It also has a 6 bolt side cover that allows you to bolt on a pto driveshaft unit, which we unbolted on the site where i got it.

There's lies my problem, my rear driveshaft now has the slip yoke or whatever on it, like a 2wd truck or car, the splined end slides into the transmission, in my case the transfer case.

Any ideas on how to fix this? Do I need a 2 piece rear driveshaft to fix it? If so what would fit or work?

I was told you need that slip joint or whatever like the front driveshaft to allow some give in it, to slide in or out a bit further.

Any ideas? or suggestions? I'm lost on what to do about the rear driveshaft, and maybe figure out a way to bolt it up in my truck, I think I can handle the mount issues, just need to find out about the rear driveshaft.