phantomLT1

iTrader: (2)

Just like the title says what is your fuel system from size of the fuel lines(-6,-8) and fuel pump or pumps?

FASTFATBOY

iTrader: (23)

255 in the tank, stock lines. I have sen this setup make 700rwhp on a LS1

phantomLT1

iTrader: (2)

How much power are you making NA and with nitrous?My tuner is telling me that the intank Walboro wont handle over 450 to the wheels with stock lines
I would have to get bigger fuel lines.

So what you are saying is that a Walboro with stock lines will handle my motor thats going to make about 470rwhp and spraying a 250 shot will not run out of fuel.

Thanks

James Montigny

iTrader: (13)

I'm not sure I buy that ...

Guys run H/C and N20 all the time with nothing more than a 255lph upgrade.

z28rob18

iTrader: (7)

hey thanks for askin this question for me i just came on here to ask it lol

Silverado_13

iTrader: (5)

Bosch 044.

FASTFATBOY

iTrader: (23)

The car I know, and saw with my own eyes on the dyno made 540 to the tires on motor and 698 on a 170 dry shot.All on a 255 in the tank with stock lines.

vanilla89

iTrader: (8)

I have A 255 with a boost-a-pump... Should be all you need for 800hp

kinglt-1

iTrader: (26)

I agree, stock fuel lines are good for quite a bit of power on lt1.

RealQuick

iTrader: (14)

A have a few customers running stock lines with a single walbro and making 500-600rwhp range.

Funkybird

iTrader: (4)

A few weeks ago my car made 754/747 but I think i'm at the limits of the stock lines. I have twin intank pumps and 60's is all at the moment.

phantomLT1

iTrader: (2)

I think I am on your side of the fence . My car should make about 650 to the wheels on the spray My tuner just is worried because he just tuned a badass procharged LS1 with stock fuel lines and a 255 and it fell flat on its face on the dyno at 500. And i guess he just wants to go the extra mile to make sure same thing doesnt happen to my car. But LS1's need more psi than an LTX car correct me if I am wrong?

RealQuick

iTrader: (14)

Injectors are your friends guys...

stock lines + racetronix intank 255 + 60# = 600rwhp no problem.

phantomLT1

iTrader: (2)

What about 700 rwhp?

RealQuick

iTrader: (14)

I would certainly step up to twin intanks at that point... 60#'s should be fine... even if you need a little more base fuel pressure.

TwoFast4Lv

iTrader: (8)

640hp/630tq nothing more then a Racetronix kit

James Montigny

iTrader: (13)

Not sure why that happened, unless his injectors were undersized or his filter dirty.
Even with an LS1 rail and FPR, 255 should have been plenty for 500rwhp.

I'm putting a 255 in for my new 383 so it will support additional power should I decide to add gigglejuice later.
At ~475rwhp (N/A), I figure the stock pump may be a little small, but the lines should be just fine.
The stock pump handled my 390rwhp H/C car without issue.

96capricemgr

iTrader: (1)

Why don't you compare the stock lines ID to the ID of a -6 once.

nonosvt

iTrader: (5)

I put down almost 500 rwhp with a 255 pump and stock injectors with a 150 NX kit