Good point.
I have a stock replacement gas tank. 3/8" sender with a 1/4" vent. 3/8" fuel line to Holley mechanical pump PN 12-440-11 rated at 110 GPH. 3/8" line to a clear fuel filter, then to dual feed line. NO return line. It runs consistantly between 5 and 7 psi. at idle but drops a bit during extended RPM operation while stationary.
This setup has been the same since 2002. This engine has been in the car since 2004. I have never noticed a fuel supply issue until the break in of the cam last week.
I've driven this car on several road trips with no fuel issues of any kind. This was with the 509 cam. I have a hard time believing that a cam swap of this manner would increase the demands of a fuel system this much.
