I'm currently doing a ls swap in my 1992 camaro. I need to do the fuel system. I have already installed a walbro 255 and now I need to do the fuel lines. I am wanting to switch to a ptfe an hose. Looking at purchasing the fragola hose because it is conductive but their website says that the sizes run small with -6 line having an inside diameter of .312". Is this okay or should I use their -8 hose with a inside diameter of .405". I would rather use the -6 hose due to the price (on a college student budget). I would like to have the ability to do some mods to the engine later down the road, would the -6 line and the c5 filter/regulator be able to support this?

 

If you are only using that small fuel pump... then the -6 AN size line is just fine.

 

So that line will easily support 500hp?

 

Normally aspirated on pump gasoline: Yes.
Forced Induction, Nitrous-Oxide, or Ethanol fuel: No.

Hopefully you are also going to be using a return style fuel pressure regulator; as this also helps.

 

Okay, Thank you!!

 

Why fragola? Earls, Aeroflow, etc all make -6 PTFE line that's closer to 3/8". -6 can support a lot of power. You really only need -8 when you are running above 700rwhp N/A or 500rwhp boosted. The pump will be the bigger issue at those levels though.

 

I do not believe that Aeroflow is carbon lined and the earls speed flex hose has an inside diameter of .298"-.330".

 

What hose would you guys recommend(not having to be ptfe)? I've been looking through some forums but I can not get a straight answer.

 

RaceFlux is another option. Their prices are low and their fuel line is not PTFE but is fuel safe. I've used a lot of their stuff. Very underrated and not well known.

 

-6 hose is fine. Will support a lot of power. More than the fuel filter and pump can support.

No need to be really particular because you'll want to replace the hose every 5 to 7 years anyway. I'd lay as much hardline as you can.

 

Why don't you just reuse your existing hardlines? Have they already been torn out?

 

The old hardline had some “repairs” done with rubber line from the previous owner. So I figured it would be best to remove it.

 

Ah, the ol' "improvements" from the previous owner...
I still say you should run new, hardlines.

 

+1
With today's pump fuels... avoiding soft tubing/ fuel line is best (unless 100% intended for Ethyl/ Methyl Alcohol compounds. Example PTFE).
...and to use hard line as much as possible (try to avoid harsh bends that crush the hard line excessively).

Nice to see you over here too! I seem to have forgotten that you had a 3rd gen...

 

I just barely realized that you were on here, too!

I'd rather run hard nylon lines than braided stainless. GM did this from the factory on many cars over the years.