GrandSportC3

What's the maximum capacity of the metal fuel lines on a C3??
For example - would they flow enough fuel for a 700 HP engine or would they need to be replaced with larger ones in order to feed such engine??


[Modified by GrandSportC3, 9:20 PM 4/1/2004]

Gordonm

The stock 3/8 line should be able to support around 500 HP. Anything more you should go to 1/2 inch. 700 HP should be a 1/2 inch line.

shoptek

:iagree: :flag

GrandSportC3

How much work is it to change out the metal fuel line??

rparkervette

It would be a lot easier to run an additional line instead of pulling out the old one. I just ran a new line for my fuel injection.

GrandSportC3

I actually have 2 lines running along the frame.. One of them is for the return line which isn't used on my car.

BB wowbagger

:lurk: :cheers: :lurk:

Gordonm

If you are going to run in it in exactly the same location it can be a struggle. The 3/8 line is a pain to get in with the body on the frame. If you are going to run a custom line (which would be my choice) you don't have to run it through all the difficult places. I helped my brother in law do this to his Camaro and it was not to bad to do. He is running 600+ HP and the engine builder said a 1/2 line was mandatory if he did not want it to lean out on the top end. So far he has had no issues of fuel starvation.

Corey_68

I was told by several racers at the track that the stock 3/8 line would support 700hp. Many were running stock line on their 9 second cars.

I went with the stock lines with my Big Block. :cheers:

GrandSportC3

I just want the fuel line to be legal at the track... I don't really care how it's routed as long as it's save and legal at the track...

Brown78

Oliver, If you change the fuel line to 1/2" you'll need to marry a rich woman just to go racing in Bradington :lol: :lol: :lol: :seeya Steve

Ironcross

Stock 3/8 th`s is good enough for anything up to a blower. :thumbs:

SmokedTires

Olivier I'm going to run -8 fuel hose to feed my new engine. I would say if it's a high pressure like EFI that's pushed then a stock 3/8 may work, but if it's being pulled, then the larger line is a good idea to prevent the fuel from stalling in the line during a hard acceleration (hence the 700hp ;) ).

GDaina

:iagree: :iagree: :iagree:

Jup, if The General woulda thought the L-88's and the ZL-1 needed 1/2" fuel lines, they woulda had them....

I would run with the 3/8 line, and if you find out that you need a 1/2" line, just spend a Saturday changing. Maybe even less, if you don't try to bend the lines per factory configuration.

Eric R

Never pulled my Vette tank but thought about it. Isn't the pickup 3/8" also? If so, how did you guys work around it? 1/2" line would be of no help if it wasn't 1/2" all the way to the fuel.

Ironcross

Thats exactly correct.

:thumbs:

The quote above about the L88`s and ZL1`s plus the LS7 is also on the money. :iagree: and since the 502`s and up dont have L88`s power no need there either. With a blower, more likely than not the whole fuel induction system would be changed as it would require several lines and 1/2 out of the tank fittings would already be built in.

:cheers: Damn I misspelled 'built', now its correct. dumb fingers I guess, not my mind though :lol:


[Modified by Ironcross, 1:29 AM 4/3/2004]

ram82fire

I run 4 dcoe side draft weber dual throat carbs on a moon cross ram . I monitor fuel pressure at the first and last carb with digital and analog gauges. I also run a haltech afr unit with dual 02 sensors that is extremely responsive and I have never seen a problem with pressure or leanout while making power . I run a 3/8 feed line !

gman :crazy: