The best test I know of for fuel system is to keep jetting the carb. up until it slows down in the 1/4 mile, if it won't you don't have enough fuel supply scope
On my old pump gas Duster I had to go to .120 needles and seats to be able to jet it rich enough to slow that car down in he 1/4 mile work up

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)