Dont know to much about that system but if the truck is that nice  then why do you have to part it out when just the transfercase is bad? Cant see where it would be hard to come by a good used one.
Dave ----

I have been out of the 4x4 scene for a long time, I thought the Quadra Trac set up was a full time system with lock or unlock in the box? How do you pick 2x4 or 4x4 and hi/lo? If full time did someone add front locking hubs? Back in the day I thought you added the locking hubs and put the trany in lock to save MPG?
Dave ----

i forgot to ask, do you have a TSM? I'm actually reading through mine right now for tranny/xfer case info....
 
next time i chat with my jeep dealer I'll ask him for his opinion as well (I should be talking to him today or tomorrow)
 
rr

Your t-case is a full time borg warner 1339, it has a viscious coupling inside allowing it to slip allowing no bind up while turning between the front and the rear. It operates much like a postraction unit. Now when the lever is in high range and the Emergency lock out in off[this is the one in glove box]. It is in four wheel drive and allows it to move all around without "skipping" as most std 4x4's will do. It will operate that way in low range too. The switch in the glove box allows you to lock the two in together, meaning the front and the rear. Which essentially bypasses the viscious coupling. In that mode a little light will come on in the dash saying Emergency drive.  It can be driven that way also, but it will bind up and skip like a normal 4x4. A common kit folks installed in the 70-80's was a mile marker mile saver, it put lock outs up front and you cruised around with the emergency lock on. Just as Dave had suggested. If you do not have lock outs it is stock. It will have the drive flanges, and the little chrome covers in the front hubs. The deal where you say it turns the front drive shaft only, and not the rear, how do you know that is happening? If that is while on a hoist, that is normal, since the front spins easier, however you are slipping the V-C by doing it. Also  I should mention, you cannot bolt any other transfer cases in place. The splines from the rear of the trans only fit the Q-trac 1339. They are made in 2 styles, one with low range, and one without, either will work. Sounds like a nice Jeep over all though, I wouldn't suggest parting it out, just a little time to do some fixing.  I know a young fellow here who would love to have one like that for a cruiser. SH

q track came with th400 from factory not 727 - and q track stoped in 79
 
http://smg.photobucket.com/albums/v153/fuzzgremlin/Quadr%20track/?start=all

If you should get to the point of deciding to part it out- sell it, please let me know. My son would be interested. Thank You SH

youguys were right it has a tubo 400 in it and 4 different size tires on it. huh wonder if that would cause a little shutter just proves the point don't listen to a 25 year old mechanic, no matter howgood they are on diesils and computers no supstitute for old and experience. I don,t think there is anything wrong with it. thanks again for info