1993 GMC V8 bogging/flooding?

I have a 1993 GMC with a 350, it is the electric carbed motor. I know my quadrojets not these computerized things. Anyways, if the truck sits at idle for a short period of time, it bogs and when you give it any gas it stalls. It stays at idle (100km/h) on the highway no problem, but if you stomp in it, again it... show more I have a 1993 GMC with a 350, it is the electric carbed motor. I know my quadrojets not these computerized things. Anyways, if the truck sits at idle for a short period of time, it bogs and when you give it any gas it stalls. It stays at idle (100km/h) on the highway no problem, but if you stomp in it, again it bogs. It is pumping a crap load of fuel into the carb, anyone know what it could be?
Update: Note* Brand new O2 sensor.
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