Another newbie seeking carburetor problem advice

Hi guys. I'm new here. I have just finished my T-Bucket and have it on the street, but I'm having what I think is carburetor problems. The car will fire up and run like a bat out of h - - - first thing in the morning and will run and start all day long as long as I don't let it set for more than 10-15 minutes. It I start the car within 10-15 minutes it will fire immediately and run great . . . but if it sets for 30-45 minutes you have to crank and crank and crank before it will start. Pumping the gas pedal or not makes no difference. Once it becomes hard to start it will continues to be hard to start until it is completely cool . . . like overnight. Also after you have cranked and cranked to get it started it runs like a champ and the whole process repeats itself. I have talked with Edlebrock tech guy several times and he can't seem to help me. The engine is a fresh 350 with brand new Edelbrock 1406 carb on Edelbrock Performer RPM manifold. Everything is new . . . mechanical fuel pump (with pressure rating of 5.7-8 lbs), spark plugs, wires, Pertronix Ignitor and Pertronix coil, fuel filter, steel fuel lines and 14" x 4" air filter. Is there anyone out that who has experienced this problem and can help a frustrated old hot rodder enjoy his ride?

Could be vapor lock, or the gas is percolating out of the carb. Where is the tank, higher or lower than the fuel pump? 8 pounds is too much for an Eddy, they work better with 3 or 4, maybe flooding when shut down hot? Could try an electric pump, switch it on when the starting problem arises, if it's starving. First you should find out if it's flooding or starving, try priming it next time, see if it starts better then. Kind of a rambling answer, but you left out a lot of info, hard to be specific.