.. I have to ask for myself. I have a 84 vette that was swapped to carb in what was the worst cfi to carb swap in history. I am in the process of fixing it to work right.
Carb is some sort of 4bbl Quadrajet. I need to get the numbers off of it for later.
I just put in a Vac advance distributor as they had left the original one in and engine had no advance.
My next step is now the fuel delivery. I was planning to use a block mounted fuel pump if space is there for it. If I go this route, do I need to use the return line or can this be removed/capped off? Also do I need a regulator with a block mounted pump or would it be fine as is?

I am kind of new to non-efi stuff. So please forgive my lack of knowledge.

 

If the Quad carb is a computer controlled carb, then a vacuum-advance distributor will not work properly - since the computer adjusts timing in a computer-controlled distributor. Does that carb have sensors, like IAC and TPS on it? If so, you'll need a non-computer carb, or a computer dist.

 

No. That model came with Crossfire Injection. Somebody put a regular QuadraJet but left the original distributor which is why I had to swap it. I was looking at it today up close and too much stuff is in the way to use a mech pump on the block. It would work but would be a pita to get in there. I am going to search but just in case I cannot find the answer, I see the regulator bracket on jegs etc that fits holley carbs. I would like something like that to fit on the Qjet. Does anybody make that part?

Edit: Ran the numbers I have a M4M Qjet from a 1980 truck.

 

A mechanical pump shouldn't require any regulator - they are only pushing carbed psi anyway. There are also electrical pumps that can be mounted close to the tank to feed a carb with no regulator required necessarily. However, you might still need regulator with either setup to adjust fuel pressure just right.

If you use the right mechanical pump, or electric pump, you wouldn't need return line.

But if I'm reading this correctly - the car WAS cross-fire fuel injected, which means it still has a pump in the tank for that right? If you continue to use that in-tank pump, then yes you will need a return-style regulator like a Mallory 4309. That unit comes with a bracket that can attach almost anywhere you desire.

 

Yes I am aware of that. But the bracket it comes with looks like ***. The bracket to fit the Holley type carbs looks so much better.