is there a need for a fuel return line from regulator
have a low 11 second 406 sbc and use a mallory 140 electric fuel pump running to front to a 2 port mallory regulator. one port to the carb line and other blocked off. everyone says i must have a return line back to cell by using the blocked off port. i have also been told that a return line is really not necessary with this 140 gal pump setup and a return line may actually hurt performance. what is right and when exactly is a return line needed thanks chevy art