Fuel system needed to run an LS3
03-03-2012, 06:29 AM
#1
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Fuel system needed to run an LS3 Hey guys,
I'm doing an LS3 swap in my '95 Mustang. My previous turbo 5.0 setup was using this fuel system that I made:
Granatelli -10AN fuel tank pickup
-10AN Y'd to 2x -6AN
2x Pierburg 255lph external pumps
2x -6AN Y'd into 1x -8AN up to engine with Aeromotive filter
Aeromotive fuel pressure regulator with boost reference
-6AN return line to tank with an in-line fuel cooler
I'm going to be running an LS3 with CNC heads and a cam. Nothing crazy, no power adders. Looking to put down 500RWHP.
My first question is, will I be okay with stock LS3 rails and injectors? (I think the answer is yes, but just wanted to ask)
My current setup seems to be overkill for this engine. I want to use the stock fuel rails, so here are my options:
1. Use current system and tee Aeromotive regulator off of feed line
2. Same as #1 but remove one of the pumps
3. Remove pumps and go back to a Aeromotive 340lph in-tank pump and tee regulator off of feed
4. Same as #3 but sell everything and use a corvette filter as the regulator
Steer me in the right direction! Thanks!
I'm doing an LS3 swap in my '95 Mustang. My previous turbo 5.0 setup was using this fuel system that I made:
Granatelli -10AN fuel tank pickup
-10AN Y'd to 2x -6AN
2x Pierburg 255lph external pumps
2x -6AN Y'd into 1x -8AN up to engine with Aeromotive filter
Aeromotive fuel pressure regulator with boost reference
-6AN return line to tank with an in-line fuel cooler
I'm going to be running an LS3 with CNC heads and a cam. Nothing crazy, no power adders. Looking to put down 500RWHP.
My first question is, will I be okay with stock LS3 rails and injectors? (I think the answer is yes, but just wanted to ask)
My current setup seems to be overkill for this engine. I want to use the stock fuel rails, so here are my options:
1. Use current system and tee Aeromotive regulator off of feed line
2. Same as #1 but remove one of the pumps
3. Remove pumps and go back to a Aeromotive 340lph in-tank pump and tee regulator off of feed
4. Same as #3 but sell everything and use a corvette filter as the regulator
Steer me in the right direction! Thanks!
Last edited by speedshifter; 03-03-2012 at 06:54 AM.
03-05-2012, 11:33 PM
#5
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I'm pretty sure the stock LS3 rails and injectors will be fine. You don't see 5th gen camaro guys changing out injectors and rails on a NA car.
I think I'm going to do what you suggested and just remove one of the pumps and leave the rest of the system alone. I have a nice aeromotive fuel filter and a fuel cooler in the return line already anyway. My -8 feed and -6 return go up to the fender also, so I think I will install my regulator behind the RH strut tower and have it tee'd off the feed line if that makes sense. Then I will have a single line going to the LS3 fuel rail which will keep it somewhat of a returnless system.
I think I'm going to do what you suggested and just remove one of the pumps and leave the rest of the system alone. I have a nice aeromotive fuel filter and a fuel cooler in the return line already anyway. My -8 feed and -6 return go up to the fender also, so I think I will install my regulator behind the RH strut tower and have it tee'd off the feed line if that makes sense. Then I will have a single line going to the LS3 fuel rail which will keep it somewhat of a returnless system.
