Quote: Ran 2 Holley blue pumps in series from 1988-2006. Same pumps and regulator never an issue. Car ran 10.80-10.90 from 1988-2000. Upgraded the engine and got the car down to 10 teens w/the same set up. Only leak I ever had in my fuel system was the big Fram fuel filter.
Why would you run 2 pumps in series and not parallel
I was in college at the time and money was almost non-existent. Ran One pump but it would not keep up w/the motor so tried them in series and no more trouble. I could have ran them sep w/one to each bowl but more line, fittings etc and if one pump went bad(never did)one of the bowls would go empty. This set up was basically a junk yard motor, heavy TRW pistons, 6 pk rods, 452 heads etc. Simply was a cheap way of racing while finishing college.
You were only lacking a bit of volume so if you put them in parallel you only have a Y and the 2 supply lines.. no need to run 2 lines forward.. this has been the way I've done it for years
