Need help with edelbrock 1406 carb

Possible. I just got this car. It was sitting for years so I rebuilt the carb. I just put a vacuum/fuel gauge on the end of the fuel line and saw 9psi. Since I had this issue with an edelbrock on another engine I figured its likely a fuel pressure issue. Most people recommend no more that 4.5 psi for the edelbrock. I didn't replace the float so it may be that but I will likely try the regulator first since it is pretty common issue...too much pressure. I just still don't get it, I thought these cars all came with carter afb's from the factory.