Putting a filter directly after the pump is a no no cos the pump is already filtered by the 100 micron pre filter. The 40 or whatever size after filter needs to be close to the carb to catch the fuel line material that slowly breaks down or any crap in general in the system.......

The magnaflow setup seems like the best design for the type of application that you are talking about. (assuming a person is still willing to use a carb for a car that is driven a lot)
The magnaflow has a return line off the pump so the fuel line to the front of the car is running at 30 psi. 30 psi is high enough that there will not be any issue with vapor lock. Then there is a small non-return style regulator near the carb that drops the pressure to 6 psi. That final length of 6 psi line should be short enough that it doesn't vapor lock. My guess is that type of setup would be able to handle most any type of fuel and weather conditions.

Come on Ray you've been here it doesn't get that hot in Illinois. Lol Gateway I believe can be almost as hot as hot can get.

I have that system its not really vapor lock. the fuel is actually boiling right out of the carburetor and yes I have a wooden spacer. I did many different tests with it.and the ethanol is the key problem any non ethanol was fine. I could let the car run in the drive way and once the car got warm which sometimes the engine wouldn't be over 175 and I would start missing and pop the hood and you would see it first start spitting out the squirters then it would start over flowing out the vent tubes like a volcano. if you pop the hood quick enough it would get the heat off the carburetor and would run fine. Since I put it the return in it has helped 100 %

Well, you wouldn't have had to worry about my fuel system

MAGNAFUEL and that's what I run and have on the street for many years and yes, even w/a nasty hard to tune carb and it's 1200 cfm to boot. No vapor lock even w/91 pump junk and I even get decent mileage if I cruise on the primaries and funny enuff, so does Ray Meyers who won Drag Week and even got up to 16 mpg's w/that nasty old 1050 Dominator thingy........

Aeromotive doesn't agree w/ this. Not saying one is better than the other, just pointing this out. When I designed my system I called them to make sure I was on the right track. They recommended a -10 feed and -8 return.

On the street you need the fuel circulating from the carb back to the tank. The short returns from the bigger pumps back at the tank won't work real well on the street. That long stretch of fuel the length of the car needs to circulate to keep it cool.

Yep, and I tried the return deal on their hot rod pump and it couldn't keep up and went a best of 9.98 then switched to the MAGNAFUEL 300 and went 9.79......

I don't think the Aeromotive 11203 hot rod/street rod pump flows enough fuel to feed a 9 sec car w/ a return style system. It works fine deadheaded though. I went 9.54 at 140+ mph w/ that pump and a single -8 line deadheaded.

Not likely my Mallory 140 can support a return setup, either. Guess I'll leave it as it is until I consider a fuel system upgrade in the future.

Agree but it said it supportes x amount of power deadheaded and x amount more iirc returned back to the tank.....

Says it supports 750 hp carbureted on gasoline. Don't see anything saying the "horsepower rating" changes whether deadhead or return style. It fed my car just fine, so there's no reason it shouldn't have fed your car easily unless you have a restriction somewhere else in your system...OR, if like I said earlier, a return style system just requires a larger pump to keep up w/ demand.

Just because you have a return style regulator, does not mean you are always returning fuel. I see no reason why a pump that is maxed out on a dead head regulator would not supply the engine with the same amount of fuel with a return style regulator.

If the return regulator stops returning it's because the fuel pressure has dropped below the setting, & that means the pump volume is to low.

Yes. In other words.... maxed out.
So regulator style would supply the same amount of fuel to the engine.

I read something that said it would support like 700+ hp deadheaded and like 900 w/a return but I don't remember exactly where I read that and it was years ago..........Hell, maybe I was drunk.....

And he was also pumping methanol from an alternative source 😏

Attention in the pits

Fuel pump must have the internal bypass disabled to run bypass regulator

On a mallory 140, there is a screw with jam nut, you remove the pressure spring just like a bb mopar oil pump and put in a solid spacer so the pump is on kill at all times

No he wasnt. I was his copilot. I dont know where that comes from

I was pitted next to you In 2006. Your windshield washer bottle seemed awfully important to be filled between rounds. “direct port water injection nozzles”😂
I was also the guy that gave you the hose you needed to continue to next round.
Don’t worry, I won’t tell anybody.