Need help with edelbrock 1406 carb

The info in post #93 is NOT WRONG. Just because 30 yrs pass by does not change facts. I have run 10 psi at the drags on Carter 4bbl as a way of raising the fuel level slightly.
Comparing the Carter 4bbl float system to the Holley shows COMPLETE IGNORANCE, which is not surprising seeing who the poster is. A side by side comparison of a Carter float & a Holley 4 bbl float will show that the Carter float has MUCH more mech leverage than a H float & will therefore withstand more fuel pressure. Simple physics. The listed FACTORY fuel pressure for the 426 hemi was 6-8 psi.