Yup, that's the Borg-Warner 1339 QuadraTrac. It's not a bad case, really,
but there are better. I have one of these in my '79 CJ7 and it has been
good to me. Parts are still available, check the 4WD Hardware catalog. It
takes a special fluid, don't use anything else in it! The transmission in
front of it is a Turbo 400.

The low range WAS optional. If it is there, there should be a small lever
on the floor in front of the driver's seat to control it.

The vacuum control for locking the differential in the t-case is in the
glove box. It will be labelled "Emergency Drive"

On the CJ7 w/QuadraTrac, the rear pumpkin is offset (to the right, I
think). This makes swapping in a different t-case trickier. If this is
the case in the SJ, you'll need to find one with the correct drop or swap
axles too.

Rust is indeed a big issue with Jeeps of that era. I am convinced that my
CJ7's body was made out of compressed rust...



"Earle Horton" > wrote in
om:

> This is from memory, but the full time TC was called QuadraTrac,
> sported vacuum controls, an optional low range and was a favorite butt
> of Consumer Reports back then, for reliability issues. The
> International Full Size Jeep Association http://www.ifsja.org/ is a
> good place to look for information. It is not so much that the TC is
> "garbage", but that the vacuum controls can be quirky, it takes a
> special fluid, and parts can be hard to find. Retrofitting a manual
> transfer case is a conceivable option.
>
> Things to look out for on these rigs are rust, rust and rust.
> Anything else that breaks is in principle fixable. If the price is
> really right, the body is OK and you have some available real estate,
> then you can start collecting running or scrap vehicles for spare
> parts. The engine is an obsolete thing, as AMC is out of the full
> sized Jeep business. Piston rings, gaskets and bearing inserts should
> still be available however. Although the transmission is likely
> internally a Chrysler products 727, the case and bell housing adapter
> is different. This means that rebuilding it shouldn't be a big deal,
> but a cracked case can lead to a parts hunt. Electrical, convenience
> parts like door handles, lift gate motor, AC evaporator, etc. can be
> problematical to find, as is the case with any old car. Weatherstrip
> and mouldings, good luck. Brake shoes, bearings, U-joints, carburetor
> rebuild kits, ignition parts shouldn't be too bad.
>