Car is a 70 Challenger with a 360 4V. Has new tank all new lines new filter new holley 600. You can crank it cold and it runs great until it warms up. Once it gets to operating temp it acts like it runs out of gas and shuts off.

I can buy another fuel pump for it but I am wondering why it works fine cold and at temp it quits? Or is it something else? I am wondering what to look at next. I thought taking the non vented cap off would help but it doesn't.