First, have you cleaned every fuel line out, since you are turning it over, I presume none of the valves are stuck which often happens when burning antique fuel. Have you thoroughly cleaned the fuel tank, best to remove to clean even filling with rocks, tying it to a large tire and rolling around!
Those are normal procedures, if that is all done, then one can address the carb!
Ed
Hi Ed, thanks for your input!
I'm using an auxillary tank with fresh gas fed by an electrical pump through an inline fuel filter, I've taken the original carb apart and cleaned it up, blew through all the internal channels and got everything moving freely again (almost everything that is supposed to move inside it had seized up) and I've also put a new ignition coil+leads on it as well as new sparkplugs. And I've made sure I have adequate compression and spark on all six cylinders. I feel like the carb has to be the culprit as everything else is in place, and the carb was in a pretty rough state when I got it off. I did clean it up thoroughly and got every internal moving component unstuck, and I have tested the functionality of the pump plunger and made sure everything is operational. It's giving fuel and the truck does start briefly, it just doesn't run properly or respond well to throttle movement, so I'm suspecting the carb is working somewhat but not well enough. Which is why I thought maybe the easiest step from here on out is get a replacement and see how the truck behaves with that. If nothing else it would serve as a diagnostic measure.
