Fuel Pressure Regulator Help Needed

[Restrorob]

Hey guy's,

Figured this would be the best place to ask.....

Just to get you up to speed;

Got this 502 in my 97, Back in 97 when the speed shop installed the engine for the P.O. they removed the in-tank pump. They removed the pump from the plastic housing and put rubber fuel hose from the top piece to the bottom piece so the filter sock is still functional.



They mounted a Holley fuel pump on the frame rail next to the tank and fed it to a Mr Gasket cheep-o regulator dropping pressure to 6 lbs which is max for the sorry Demon carb., Since this monkey rig the truck will run out of fuel with approximately 10 gals. still in the tank. In other words the pump will not run the tank empty.

I had the Holley pump start leaking last month and went to NAPA and picked up a 6 to 12lb. in-line pump leaving the regulator in place, It worked fine for about 60 miles then started sucking air someplace (pumps very little fuel @ over 1/2 tank).

I'm tired of screwin around with this fuel system......

I don't race or beat on the truck just drive it to shows...... I want to install a new stock 4.3 pump/sending unit assembly in the tank so it will suck it dry.

The stock pump puts out 58-64 psi so I will still need a pressure regulator but I don't want to choke a $300+ pump down and possibly burn it up.....

I looked around at Summit and Jegs for regulators.

Questions;

What's the difference in a "bypass" regulator and a "return" regulator ?

Which regulator would be a better choice for the application I want to perform ?

Sorry for the long read, Just wanted to make understood my delima......

Any help would be appreciated !