I have had ongoing issues with heavy gas smell. Not make you pass out smell but when you go for a drive you smell and the car stinks up the garage when you park after a drive. 350 2bbl Rochester. I've read many past posts. I have checked all the fuel connections and found no leaks and all the lines seem ok with no obvious leaks.
First thought was car was running rich. I adjusted the carb and found both idle screws out at least a full turn too far. Now set to about 2 1/4 turns each. Idled well but border line when in drive. As in almost stalled. I adjusted the main idle (throttle) up a bit and seems much better. Test drive seems fine. BUT this thing still stink like gas.
The engine compartment smells bad which I believe is venting into cabin. But no obvious leaks. Trunk smells fine. Exhaust smells but not smoking once warm. Light smoke when cold.
I'm thinking maybe fuel pump is next try? Maybe bad seal or leaking into gas. Oil didn't seem too bad at last change though. While doing this will replace line to carb and fuel filter in carb.