Cliff's Quadrajet Parts and Rebuild Kits

RobbMc.

best thing i did for my Qjet was put an intank pump in my squarebody. the fact you had an electric pump from the get go and removed it is wild.

  Looking at this Robbmc website, they're recommending that you use a vented gas cap, but they are assuming you are racing. They also mention using a "cool-can,"  and wrapping the fuel lines.
 A vented cap isn't going to work for a vehicle on the street, your vapor recovery system won't work properly.
 Wrapping the lines is impractical, mainly because on a street-driven vehicle the heat build-up would overcome any advantage wrapped lines would give you, that's a quarter mile at a time solution.
 And using a cool-can you would have to add ice every 10 miles or less.
 So what actual advantage would you have by using one of these pumps if it requires all these other tricks to overcome your low fuel pressure problem for short distances?

 I need a solution for long distances in excessive heat. Am I looking for a unicorn?

I fought this same demon for years. Engine heat boiling the fuel in the pump. The key
is having sufficient bypass flow to displace the boiling fuel with cooler fuel from the tank.
 
 In answer to your question I don't think there is a high performance 3 port fuel pump.
You may need to use a performance pump, 80-100 GPH and come up with your own
return bypass petween the pump and carb.
  Is your existing return to the tank free and unrestricted?

I finally had to revert to an in-tank pump and return line with a bypass regulator
under the hood. No more problems. I really wanted to keep my mechanical pump.
I HATED the idea of an in tank pump. I even passed on a really good deal on
a 880 block because of no fuel pump provision.

 QJ

  I hate the idea of an electric fuel pump as well, which is just one of the reasons why I removed the original one from the tank.
 This used to have a throttle body system on it but wouldn't work with the roller cam, thus the carb and mechanical pump.

 So which fuel pump did you finally choose, and what regulator are you using?
 There's so many to choose from I honestly don't know where to start, and trial and error can get expensive.

 If I have to go back to an in-tank pump though, at least it's already wired for it.
 

RobbMC makes a nice mechanical fuel pump. Not cheap though.

 Yeah, not cheap, but not totally outrageous. My question is how long have these guys been in business? And a 90 day warranty is a bit short for what you're paying.  Has anyone here bought and used one of these,  what's your experience with it?

  Rick

My NOS 1910 i checked orifices on indeed has .055" idle channels and also .055" idle bypass air. FWIW