Ok, my son just got a 68 Galaxie and all of the sudden it won't stay running. When its cold it fires right up for 10 seconds, but runs very rough. I try to start it again and i have to pump the crap out of the peddle to get it to stay running. Here's what I have done in the last three months to the car
1. New Holley 625 Street Demon (air/fuel was dialed in a vacuum gauge)
2. New in line fuel filter.
3. Spark plugs
4. New vacuum lines for the carb.

Thanks in advance for any advice with this.