Idle fuel pressure 5 to 7psi. More is not better.
Flooding is caused by high ffuel pressure
defective dirty carb needle seats, high float adjustment
lack of a fuel filter.
hot carb and or hot fuel pump and fuel lines.
move fuel lines away from exhaust system.
restrict and or block the exhaust heat risers at the manifold gasket
install a holley carb heat shield (or make your own from sheet metal) the shield must extend under the carb bowls.
Install a Edelbrock wood carb spacer. ( divided type for a dual plane manifold)
Install a mech fuel pump heat shield gasket.
excessive fuel pressure is the usual cause.
More than 8psi is way too much. 5 to 7psi is just right for a holley.