Quadrajet Problems?

[thor0812]

Thinking I have a carb problem on an 85 Chevrolet 350 standard. Getting fuel to carb. Pump is pumping strong. Return line and all filters are clean and clear. If I put a little gas in the carb it will crank and run for about 45 seconds at idle then die. Try to restart and nothing. Add fuel to carb and starts back up. If I ease into the throttle, it will rev all the way then die. Acts just like it is running out of fuel in the carb. Not real familiar with Quadrajets so wondering could this be a float sticking? Hole in a float? Any help will be greatly appreciated.