I just installed the recommended electric Carter fuel pump with metal filter before pump. Running dual dell 40's is it necessary to run the Holley 12-804 regulator. Since this is a low pressure pump--won't the carbs themselves manage the pressure? I installed the regulator but it doesn't seem to want to get me up to 3-3.5 psi by the reading on the Summit gauge. Can I eliminated the regulator and run straight to driver side banjo?
David
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I have dual Dell 40's with no regulator. Plumbed directly from driver's side to passenger side. Been that way for over six years. No problem.
I did have a problem with a bad float, but nothing related to fuel pressure.
I don't think that Dell ever recommended inserting a regulator. In fact, I thought that they sold them at least partly on the fact that "you don't need no stinkin' regulator".
Perhaps I am incorrect but I am certain your question will draw some diverse opinions.
I’ve got the same setup and no regulator. Not needed!
Plus the regulator is prone to failure, I had one pouring gas into the engine compartment.
I’ll not have one...I can’t...I won’t!
I have the same set-up as Bob (and you). Been running regulator-free for 17 years with never a problem.
Yanking regulator when I get home later--see if that helps.
No need, the Carter pump is self-regulated. I checked output before I put the engine back in. It read 3.5 lbs. on the nose with lines plugged, no flow.
I had 3.5 lbs. pressure in the nose last Winter, but then, I had Pneumonia for a long time, too...... 
I hope you're feeling better, Gordo!
Pulled regulator-Speedy is much happier now.
