electronic fuel pump???

74dusterman That's a good question. I've been looking into the same thing. I don't know much, but from what I've found out, few manufacturers are going to tell you, in their advertisements, what you need to know. Especially if you drag race the car. They mention the free flow and different pressures, but they seldom put it together. Where there is confusion, there is money to be made !

Fortunately edelbrock does tell you a little more in their instructions at Summit Racing website. For $200.00 their 1792 has a free flow rate at 160 GPH. Put some pressure behind it and it falls off to 80 GPH at 6.5 PSI.

Just like putting your finger over the end of a garden hose, pressure goes up and the flow goes down. You have to have flow and pressure, cause you can have empty fuel bowls and 7 PSI at the regulator. I know there are variables, but the flow of 80 GPH is not even close for a 12 second quarter mile car.

It looks like, according to Don at FBO,you would need a minimum of 120 GPH at @ 7 PSI, for a 12 sec. car. Getting into the variables, he suggests 150 GPH. This comes from his Tuning To Win Guide.

Like stumper said, a good mechanical might do.
I agree with trapster, and I don't buy anything from mr gasket. NOTHING.

Which holley fuel pump are you using right now ?