How good are they usually. I borrowed both from a friend this past weekend. The fuel pressure would never stabilize. At 7 pounds the engine would flood out and die while idling. At 5 pounds, the car would slow down. Had to constantly adjust the pressure. In all fairness, the system had not been used in about 3 years. What has been your experience with them?

my blue pump went bad after one summer of weekend street use!

I used to go through a lower housing per year. They all started to leak. Other people have zero issues.

you get what you pay for. after having issues with the std holley blue regulator, i bought a Mallory. instantly the pressure guage stabilised & the carb no longer starved for fuel. after pulling the Holley regulator apart, i realised why they're rubbish. i now use a Magnafuel pump & regulator & have zero issues. i modified the Holley blue pump to be my trans cooler flushing pump, it seems to be in it's element in that job. hand on heart i'll never use a Holley blue pump & reg on any car i own til the day i die. cheap junk pump & regulators are for cheap junk cars. i own a Mopar so thats removed the cheap junk part of my story.

I ran the Holley red pump for many years that uses the built in regulator and it was rock solid at 6 psi. In fact I ran 10.70's with the Holley red pump. Then switched to the Holley black pump about 2 years ago with this regulator here that I bought with the pump at a local speed shop. I set the regulator at 6 and it has been flawless for the 2 years its been on the car. And it runs 10.70's with it also. I only went to the larger Holley black pump because I was afraid the red pump would not supply enough fuel as its rated at 98 GPH I believe and the black is rated 140 GPH. But the red was giving me enough as it runs the same mph and et with the black pump and regulator. But its rock solid at the 6 PSI where I set it and I have had no problems. I have run Holley red and blue pumps since the 70's with no problems. I went with the black this time because its rated a bit larger then the blue. Ron

I use to use 2 holley blue pumps in parallel on my
car some years back but I hated the cheap holley
regulators so I went with a mallory 4 port with return..
I run a return system on all my junk... now I have
2 holley blacks in parallel with the same reg.. on
my Rampage I have a single Mallory 140 pump but that
will be coming off and going with injection

Never had any issues, the car used a black pump and I use the 12-803 regulator for the motor and nitrous which also has it's own black pump. I even use a blue pump every day winter and all as a lift pump on my Cummins. Zero problems here.

I have one on this car and I haven't had one issue. I keep my pressure at 6. Been on the car for 3 years and I think it was used when I bought it.

I've never had any real issues with the blue pumps
other than they are LOUD but I guess I am a little
more into quiet.. even when we tested pumps in the lab
at work... I've never found any pump quiet

I have had great luck with them. I carry a spare on dragweek but have yet to need it.

Check your free flow rate with the system you have before making any change. The blue pumps put out enough fuel for up to 500 hp, and the regulators have worked well for me in the past. I am not a fan of the blue pumps though, I have a box full of bad ones. If you are at about 500 hp, then the free flow rate should be about one gallon per minute to feed that much power under pressure.

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.

I ran a blue with two Holley regulators with no issues.......for a lot of years.
It got busy as far as plumbing.......from the pump to a Y block on the fender well , regulator on each output into lines that came in to an aluminum block I made that had two inlets and outlets and the pressure gauge pick up point in it.
The block was mounted on the carb heat shield.
I seem to remember reading that the volume restriction was in the regulator and that was what pushed me in that direction.
Stepped up a bit on this deal , but knowing what I know now I think a return system regardless of who's pump is the way to go.

Hey Tim. I'd be very concerned about any fuel system components that have been dormant for some years and put back in use. New they would be fine for your deal. PM me

I have REALLY hurt some guys feelings about their fuel regulators on my flow bench...........LOL!!.....Those "cheap" Holley regulators are the most repeatable and consistent regulator you can buy. The only drawback they have is the inner flow path diameter. But it requires BIG power to need more fuel than they can deliver and they are more than enough reg for 99% of guys

Monte

I use 2 Holley blue pumps and regulators on my junk, one for each carb. I've never had a problem unless they sit around dormant for years. BTW I've done the fuel flow test years back with a .110 orifice and these pumps and regulators flowed more than enough to feed my engine.

This is a picture of one of Bob Glidden's Clevelands from about 1979-80. Pro Stock cars were going mid 8's at that time. Note the fuel system in the picture. Check out the water pump drive too. Pretty trick stuff.