Rough idle and stalling

Carb Acc Pump, timing, or the wires could have gone south after 2 years, not sure on that part tho.

I would check the idle screw on your carb if that doesn't work adjust the fuel mixture .

I had the same problem about a week ago, and then one day the car wouldn't start two days after the ruff idle, it was all of a 30 second fix, hope the same is true for you.

Looks like a Chevy carb on a ford.

Try some carb cleaner sprayed down it,
It could be just a blocked air vent.

PB

that is an old carter AFB, good carb. honestly it looks it could stand a rebuild, but to adjust the idle mix the 2 screws in the lower front (the ones with the springs behind them) are your idle mixture screws a good setting to start with is 2 full turns out, in other words screw them in all the way until you feel them bottom out DO NOT TIGHTEN THEM, just until you feel them start to resist you you turning them, the screw them out 2 full turns, from there adjust them in or out until the idle smooths out. the idle speed adjustment screw should be right behind the linkage where the throttle rod attaches, ideal should be between 700-800 rpm in park if you don't have a tach you'll just have to guesstimate.