This is my '81 Cherokee. I picked it up in January and have been patching it up since. One of the previous owners pulled the I6 and dropped in a sbc 350 and a TF727. It's had plenty of issues and I've done a lot to stop the bleeding (new 4 inch springs, tires, diff breathers, tranny adjustments, tranny cooler, new ignition, air intake,reverse lights, interior carpet, door panels and hardware, body work and paint among other things). For some reason it tends to overheat on the highway. I'm in the process of replacing the entire cooling system.
It seems that the AC/heat works but doesn't blow through the vents. I'm afraid the duct work is clogged. If anyone has any advice on how to fix it without gutting the system please let me know.