Originally Posted By ProSport
Originally Posted By Thumperdart
5 psi and no more and stays there past 7000r's and that's the WB gauge to help sort out the idle, transition, cruise and wfo......... thumbs


What size needles/seats should I run on a 4150 950 carb at 5psi?
I have a decent fuel system with return line.


I run .120 or .128 in 4150's and .128-.132 w/Dommys although years ago, I ran .120 in Dommys into the 9's and no issues BUT, lower/cleaner fuel and less aeration in the bowls makes em happy..........Crazy, yes insane, ................. work

72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....