Please help me get the right parts. And not screw up.

[DynaBro]

Trying to piece together fuel lines for my 383 with an Edelbrock AVS2 and am running a vapor separator with a return line (don't ask). I have these pieces so far:

Edelbrock 8131 ( -6 AN male inlet will accept an Edelbrock fuel line kit for a complete fuel pump to carburetor plumbing solution. )

https://www.edelbrock.com/chrome-single-feed-steel-fuel-line-with-polished-filter-8131.html

Edelbrock Fuel Hose Kit #8123 Braded Stainless Steel Hose (with 3/8" NPT Outlet)​

https://www.edelbrock.com/braided-stainless-steel-fuel-hose-kit-8123.html

521 vapor separator

https://521restorations.com/Fuel-vapor-separator-1968-1971-440-and-426-Hemi/

And some assorted metal lines that previously connected the Holley Dual Pumper which I replaced. I will post a pic of those and my current messy situation when I can get outside in case they are useful.

I would appreciate some help finding what I need to get this all put together. The various sizes of threaded ends are difficult to wrap my brain around. As well as the correct clamps since there are 3 sizes of hoses involved as I understand it (3/8 5/16 1/4) assuming anything was done half correctly previously.

So, I think my primary question is what can connect that braided hose to the vapor canister?

 

[DynaBro]

…

 

[Rishi]

If you take the braided stainless steel hose out of the equation, it gets simpler.

I'm not a big fan for those screw hose clamps. I prefer the spring action type:

But that is a matter of preference. The pressures on the suction side are low, as well as the pressure side, like 5 PSI. The screw clamps are overkill. I don't like the way some tighten the screw ones super tight making the hoses look glumpy and balloon-like.

Even in the fully OEM setup, the hard line did not connect directly to the vapor separator. It was connected to the hard line(s) with a short piece of hose.

Presuming no fuel filter, and you want it to look as factory, and be as high performing and functional as possible, I would go with a setup similar to the 426 Hemi and 440 HP engines:

1. a standard hose from frame rail fuel line to fuel pump inlet.
2. a standard hose from your fuel pump outlet into the bottom of the vapor separator.
3. a standard hose from the vapor separator vapor outlet to the frame rail fuel return line.
4. a (short) standard hose from the vapor separator fuel outlet into a hard line. a (one piece) hard line, that routes upward, behind the alternator, turning 90* rearward, and running along the top of the engine between the valve cover and the intake manifold, then turning 90* again to the carburetor and upward into the threaded fuel inlet on the VS2 carburetor.

If you want a fuel filter, the hard line segment must be split at the location you wish to place the filter. Either behind the alternator, or up top along the valve cover.

If you're going custom, you'll probably have to learn how to partially flair the nipple on a hard line you bend yourself. There is a tool that looks like a long spring, that allows you to make sweeping 90* bends in the hard line without kinking it, and it works pretty well. I've used the reproduction (of the OEM) 440 HP fuel lines and they work really well. No mods are needed, unless you want to add a fuel filter. Locating the fuel filter too close to the vapor separator can get a little messy looking. I've seen, but never used, a modern fuel filter with the fuel filter + return vapor separator built into one unit.

If you go with the chromey fuel filter elbow thing from Edelbrock, you will end the hard line before the last bend into the carburetor.