This would be where you'd find it, if there were such a thing back then. There was no CGVW rating...only GVW http://gmheritagecenter.com/gm-heritage-archive/vehicle-information-kits.html Maximum payload is about 1500 lbs, you should be able to tow about 6000 lbs with it. You'd want trailer brakes, and preferably a weight distributing hitch.
I used to tow a stock car on a trailer with an old C10. It went pretty well, but its all flat roads by me. Of course we had no trailer brakes and just the plain-jane hitch. Always did make sure that the truck was 100% for brakes and other safety items. But yours should do 6000 lbs like Squirrel says. Bob
Load it like a box car drive it like a race car. but he is right 6000 is the limit in tenn on a half ton pickup but the 3 speed will be the achilles heal gears are to far apart
We cut post and poles in the early 90's for extra cash. We never towed much in his, as we needed to stay pretty slow. I think they will tow more than they can stop.
The drum brakes had to be good if you wanted to stop a loaded truck or when towing something big. I'd go through them and replace everything with NEW parts, the last old one I had I converted to a dual master. The C30 I had with the 4-speed was a superior tow vehicle though. Bob
Don't forget brake fade too if you're going any distance in traffic or up and down hills. Once things get hot they don't work nearly as good! And grabb a front sway bar out from under a '67 or newer 3/4 ton Chevy and retro it onto your torsion bar front end. 6 or 8 holes and some grade 8 bolts and it fits perfect.
At this point in my life, I'd be looking to swap in a disc set up if I had a truck I was going to use for towing. Bob
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