Smart advice,...I run an electric fuel pump gauge in the cab,....really letís you see what is going on. I am using an edelbrock fuel pump that is 6 PSI. I got tat specifically because it has a strong casting, I donít need a regulator....but I do run a return line to the fuel tank from the carburetor.
That return line has an 060 orifice that keeps fuel cool up to the carb and always moving. That with idle drops the pressure to 5 1/2 at idle.
At 75 mph 2500 RPMís steady 5 PSI,....PSI does properly drop some when a little more throttle is given at lower RPMís 4 maybe.
Pressure is resistance to flow,....so you can watch as you go.
temperature has a small effect on fuel pressure as well, the viscosity of liquids is effected by temperature. So just like your motor oil is thick when cold and thinner when hot,...I have noticed the same on the fuel but much slighter. About 1/2 pound. Cold fuel is 1/2 PSI higher than hot fuel....you can see it on the fuel gauge.
I do wrap my fuel lines with DEI fire sleeve which keeps them cool and helps a lot of ways.
That Edelbrock fuel pump has stong flow works good.