I'd just use Stabil if I wanted to do something.
I doubt letting the gas sit in there for 6-7 months would do any significant damage to a Stovebolt.
Does anyone know of credible studies on what Stabil does on a chemical basis? As a chemist, I'd want the analytical data.
I'd like to get 2 identical carbs and fill them with gas, stabilized and not stabilzed. I'd have to force it through the passages. After 9 months, disassembly should show whether it's worth it carb-wise. I'm guessing there would be difference.
Personally, I wouldn't worry about older, unstabilized gas in the combustion process itself, but that's just me.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.