Fuel requirements for LS3 motor.

[Larry]

I am helping a friend build a 33 HotRod. We are using a fuel injected LS3 motor. I don't know what fuel pump and regulator I need. I would to use an in-tank pump, but I don't want cut my tank open to install it. So, My question is what is the best set-up for this system. Also, does the return line come from the regulator or the fuel rail.

Thanks for any help you guys can provide.

Larry

[OCCPete]

LS3 needs 60 psi and is a "returnless" system, meaning the return line comes from the regulator. There are many options for fuel pump and regulator. I'm using a Walbro 392 pump and a LS1 fuel filter/regulator: http://www.speedwaymotors.com/LS1-Fu...Kit,41791.html.

Pete

[Presto51]

I am helping a friend build a 33 HotRod. We are using a fuel injected LS3 motor. I don't know what fuel pump and regulator I need. I would to use an in-tank pump, but I don't want cut my tank open to install it. So, My question is what is the best set-up for this system. Also, does the return line come from the regulator or the fuel rail.

Thanks for any help you guys can provide.

Larry

Larry See if this would meet you needs http://www.streetlegaltv.com/tech-st...-installation/

Ron

[Silent T]

Nice article.
Be careful installing with LS3. It's only rated at 43.5 psi.

[Larry]

I think I'm going to use the Walbro 392 pump. That in tank pump is a little to pricey.

Thanks for the help, Larry