Old gas in '78 Dodge van

I did just that, I removed the pump-to-carb line and made sure there wasn't anything clogging it. I even tried cranking the engine for a while with the carb line taken off and nothing would come out of the pump. I did smell the gas that was in the line and it smelled weird like paint thinner or something. Hopefully it won't be too bad, this thing is a bargain ($550!!) and already has dual exhaust, new battery, new tires, new shocks/springs and the carb is a newer (and bigger) Holley 2-bbl. instead of an old BBD.