What are you using for fuel lines?

[claytona08]

Hey guys, I'm in the process of installing a LS2 in my 71 Chevelle. What fuel lines do you suggest or recommend? This is my first LS swap so my knowledge on this stuff is fairly limited. Thanks in advance

[icemanrd19]

i used stock lines and Earl lines from the stock line to engine and the same from stock line to tank.

[csouth]

^^ See above....This is what works

[slimjim]

did you guys go with the stainless version or OEM?

[csouth]

did you guys go with the stainless version or OEM?

OEM works fine... I used PTFE hose from the tank to the FPR, then FPR to hard line. From the hardline to the fuel rail

[andrewb70]

If you need to make hard lines, NiCopp is easy to work with and frames easily. To mate the NiCopp with AN style fittings, do this:



Andrew

[slimjim]

Thats a neat video and a great flaring tool, I was planning on using NiCopp for my brake and fuel lines but wasn't aware anyone was still using these pre-made OEM fuel lines on LS swapped cars, I figure it could save some time. But what is everyone doing about the return line? I haven't found any 1/4" OEM lines

[csouth]

Thats a neat video and a great flaring tool, I was planning on using NiCopp for my brake and fuel lines but wasn't aware anyone was still using these pre-made OEM fuel lines on LS swapped cars, I figure it could save some time. But what is everyone doing about the return line? I haven't found any 1/4" OEM lines

You don't need a return line of you use the corvette FPR, only what it needed will go to the rails.

[icemanrd19]

vaporworks system didn't need a return line

[raustinss]

What kind of hp levels can stock lines support

[claytona08]

I'll be relatively stock with a cam, ported and polished 243 heads and headers. I expect the engine to get 500hp at the crank so I've heard that I can't use the stock fuel lines....any truth to this?

[AU Doc]

What is everyone using for fuel line in your LS swaps? I've never plumbed a fuel system for an EFI engine, so there are some details I'm not sure about.

Is there a "most common" approach? My first thought was to use hardline from the engine bay to the rear where I'm planning to use a corvette style filter/regulator, but I'm not sure how to make the connections from the hardline to filter/regulator and then from the regulator to the tank. Are AN fittings the easiest route here?

I'm planning to use a Tanks Inc EFI fuel tank, and I see they have a kit that uses flexible for what appears to be the entire fuel system. Is that twist-lock hose durable enough to use for the full length of the car unprotected?

[oleyeller]

Factory 3/8" stainless steel from Right Stuff Detailing. Tank to firewall then -6 PTFE hose with AN fittings to the fuel rail.

[AU Doc]

Do you have a regulator plumbed in there somewhere? Are you using a return line?

[andrewb70]

Do you have a regulator plumbed in there somewhere? Are you using a return line?

I have a ton of pictures in my Cougar build thread. I like NiCopp for fuel and brake lines. Then I mate that with PTFE AN hose. I use a Corvette regulator/filter in the back and a short return line.

Andrew

[another69]

I really like the hardline, but got lazy with my car. Used Brown & Miller PTFE line fully the last few times I ran fuel lines. Be sure, whatever lines you use, that they are rated to be used with pump gas at efi pressures.

[AU Doc]

I'll check out your thread....... again I've been reading up on the NiCopp line. Sounds like it's a lot easier to bend and flare than steel lines.

[ULTM8Z]

Braided PTFE line from Aeroquip since about 2007. Never had one issue.

[AU Doc]

I really like the hardline, but got lazy with my car. Used Brown & Miller PTFE line fully the last few times I ran fuel lines. Be sure, whatever lines you use, that they are rated to be used with pump gas at efi pressures.

Those are two of the main things I've been wondering about. EFI fuel pressure and ethanol fuel blends.

[badazz81z28]

I custom bent my own lines from 3/8" stainless. I didn't use factory because I needed to rid the rubber center piece and the ends needed to be modified for AN anyways. They sell AN adapter fittings for that corvette filter and for the fuel connects on rails and pumps.

Plus..,I hate the "shipping bend" lines prefab companies do