Wont start arter running

My recently restored 74 'Cuda is having trouble starting up after it has been running. If I drive it to town and then shut it off for a bit, like to get gas or go in a store, I have a lot of trouble getting the car to start again. Thankfully by battery and starter are working well because I end up cranking the engine on and off for a few minutes. Some times I have to get under the hood run the throttle buy hand and have my girlfriend turn the key so I know I don't flood the engine. It seems to have this problem most when it is warm outside. I'm not too sure why this is happening and would really like to avoid getting stuck. Any suggestions on what this is or what I should do? The car has a 360 with a Holley 650cfm 4150 mechanical secondary on top.
Author: JedIEG