Ok guys i need some help i want to trash the stock fuel system and upgrade it but what will it take I'm looking into doing a inline unit with a sumped tank but i was following the fuel lines and they go to some little black box wtf? so whats the deal and what should i do

marc

 

I'm not sure about that stuff right in front of the fuel tank but, I believe it has something to do with the Evap. emissions stuff.

You could probably get rid of it but, I haven't really looked at all the connections good and where they go.

If your looking to do a sumped tank I would consider getting two small inlines(walboro GSL392's I believe) and run them in parallel. They are the equivalent of the GSS340 intank pump that has supplied enough fuel for 550rwhp. Have one run all the time and the other come on at a preset boost level using a controller of your choice. Wire the second pump to a toggle switch also just in case the main pump decides to quit one day while your cruising around(an advantage of two pumps <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> )

From the pumps run -10AN line up to a y-block in the engine bay. From the y run -8AN line to each side of some billet fuel rails(Speed Inc sells some). Come out the back of the rails with -6AN line and run both to an Aeromotive manifold referenced regulator. Run the return line out of the regulator and back to the tank.

As far as fuel injectors I would run some big injectors(84#+ depending on expected hp) and they will require an impedance converter(Speed Inc. sells one). You will have to cut and splice the injector harness' from a F-car to use these injectors also.

Of course don't forget a new fuel filter. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Definately not a cheap proposition. <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />

This may be overkill depending on how much hp your planning on running but, if your going to redo the fuel system you might as well heavy it up on the first go around.

What are you planning to do if you cross the MAF airflow threshold? <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Some

John

<small>[ February 10, 2003, 03:36 PM: Message edited by: XLR8NSS ]</small>

 

I just didn't know what that little black box was so if it wont hurt my truck then i'm going to trash it and run a single inline looking at the aeromotive pump and a regulator that runs off of boost

marc

 

Alright well, I typed all that for nothing. <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" /> <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Somebody else might know a little more about that but, I'm pretty sure that it is part of the evap system. It'll probably set a code if you take it out. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> That's what LS1edit if for though. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

John

 

how much power do you plan on making? i added an inline version of the 340 to my system and nothing else and so far it has covered me.

i was running way rich(peged the wide band at 10-1) with 9psi and 6000rpm, was seeing 52+lb/minute air and was just starting to loose fuel presure. since then i have pulled someing like 20%fuel out of my PE vs rpm chart(at 5% my fuel presure held steady) so i know i have some room to grow. i believe that this cheap inline pump would carry me to the limit of my maf(58lb/min?) but not much farther.

can't remember what route you are going but if you are going with a nitrous set up you might want to think about a simple seperate fuel system with some good gas just to feed your nitrous and just do what i did to feed it the rest of the time.

 

hey marc, are you nuts? what are you trying to accomplish with this? add an inline and bigger injectors to what you have. until you get the turbos on, you'll drown that motor at wot if you aren't careful. save your money for the custom exhaust manifols you are going to have to get made.

 

first off yes i am nuts just so all of you know, i'm wanting to be able to get into the tens so i want to have a fuel system that can hold that so thats about 700 rwhp and if all goes well once i get turbos on which i'm not making custom headers cuz i'm cheap i'm just flipping the stockers upside down dont' worryt though my plans are to jet hot coat everything under the hood to keep the temps down and to keep velocity in the exhaust up the only problem i have now is the stupid tranny which should be out tonight if i stay up late enough,

texas terminator if you wanna help why dont you come on by shoot me a pm

that goes for everbody

marc