Nothing bolts up in place of the
QuadraTrac directly. It has a unique tail shaft in the
Transmission and I believe a unique (or at least uncommon) bolt pattern to mount it. Any kind of swap is probably going to involve a conversion kit for the
Transmission at least and that means a new tail shaft which involves a complete
Transmission rebuild.
It's not a terrible
Transfer Case . Jeep put them in the full size Wagoneers, Cherokees and J-trucks. For the 401 V8 it was the only
Transfer Case available. The smaller engines could run a
Dana 20 but the 401 would break the adapter. So it's plenty stout.
That being said, the vacuum diaphragm that shifts the differential lock is prone to going out and there really isn't a replacement available anywhere. And with the
QuadraTrac , there is no axle disconnect. It's a full time case with a viscous coupler on the front output. Disconnecting an axle will cause that coupler to blow out in no time. You can't even use locking hubs with it in full time mode.
Trouble is, that leaves you with only four options.
1. Live with an unlocked center diff
2. Force it into part time "E-Drive" permanently and rely on locking hubs to give you 2wd mode.
3. Build your own mechanical shifter by cutting up the one you have and adding a cable shift or electric solenoid.
4. Swap out the
Transfer Case for a Dana/
Spicer 18 so you have the
Transfer Case outputs in the right place to match your offset axle.