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Originally Posted by Desert1957
Here is an interesting read from Hot Rod Magazine about fuel pressure.
Number One: Incorrect Fuel Pressure
Surprisingly, the most common problem with getting a carb working right is not having the correct fuel pressure. Quick Fuel Technology tech expert Zach Baker says: “These carbs are designed to run at 6.5 psi. You might be able to get away with 7, but we’ve had a rash of pumps that do 8 or 9 pounds, which is great from a volume standpoint of getting fuel to the front of the car, but the carburetor’s not going to be happy there so you have to run a fuel pressure regulator and a lot of people just don’t.” The head of Edelbrock’s tech department, Dave Stinson, recommends a regulated pressure of 5 to 5.5 psi on their carbs, with a max of 6.5 psi.
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I have a fuel pressure regulator that I can install directly before the pressure gauge. The pressure is bouncing around a little, but is between 5 -6psi.