Fuel Fluke

I am having that same problem. I am running a OE system with a new Summit mechanical fuel pump. The car will sit overnight and the filter will fill with fuel, but when I try and run it it runs out of fuel. Really sucks when you are at the 1/8 mile mark at the racetrack. I just went thru the entire fuel system this past weekend, blew it out, replaced hoses and clamps, etc. Still runs, but will stall for lack of fuel, is there an air bubble in the line somewhere? Where is the air coming from? Cap is vented.