This is the Edlebrock pump and I did infact find directions on there site, soo easy
I turned the pump up to 6lbs at idle and when I rev it, the pressure flickers a little to around 5.5lbs. I have probably turned the fuel pump a full 2.5 turns clockwise and Im still not hitting the magical 6.5 lbs im not sure how much to keep turning the pressure adjustment screw. I messed with the Holley external regulator near the carb and It doesnt seme to make much difference in raising the fuel pressure at the carb inlet either. I was hoping to adjust the fuel pump pressure up and regulate it back down with the external regulator and therefore eliminate the needle flickering and achieve a consistant 6.5 lbs at idle and while revving engine.
Originally Posted by newschool72
The only way I could increase fuel pressure on the old holley red pump i had was to change springs in the pump.