Hey guys I got a ls1 plastic gas tank, what should I use for my fuel pump, preferably an intank one? Going in a third gen camaro! The old one is dead, so it will need a new one anyway!, is there a good regulator I should use with it? Looking for a ll the info for this stage of my project, some guys gave me some input on a external set up! Thanks to those guys! Now need info on the intank setup, thanks

 

Well you first need to know how much power you want to make, then make sure the pump can support it

 

i have a walbro gs340 pump intank in my mustang with aeromotive regulator and a return line

 

The Walbro's seem super popular. You can run an EFI pump with a carb regulator. I run a Mallory 4309, but with an external carb pump. Works good.

Aeromotive makes a 340 pump that has a bit more capacity.

 

Yea I hear a lot of people using walbro! So really I can use a stock type pump etc Aeromotive, walbro, malory, and use my return line with a regulator? I fugure im going to make around 450hp! Any ides what is best? Thanks for the help guys, really not up to snuff on fuel systems

 

My LS2 is rated at 440 HP. I run a 140 gph Mallory pump with 3/8 feed and return lines and the 4309 Mallory regulator. this is really too much fuel system for this HP. All it is doing is making excess noise. It could easily support nitrous.

If you get the same walbro EFI pump all the fuel injected guys use then you will have more than enough pump for 450 HP. Pumps move more fluid as the discharge pressure gets less. Using low back pressure fittings, low pressure drop filters, the right size fuel lines and a return style regulator all mean you need less pump. By the same logic using stuff that is too small or with too much back pressure means you need more pump to make up for it.

 

A Racetronix kit would be a good way to go as well

 

I dont know anything about your fuel tank, so I dont know what will " drop-in ". I have a 72 camaro with the factory tank. I cut an access window in the top of the tank, then installed a aeromotive HP700 pump "in-tank" and built a tray for the fuel pick-up. The pump is rated for EFI or carb apps and will move enough fuel for 900 na hp at low pressure or 700 na hp for efi. It is overkill for your setup, but because Im running Fast EZ efi it gives me a little room to grow from my 530-540ish HP up to 700 hp, if I go stroker in the future.
Morral of the story is, if you are creative, there are alot of options out there for you. I would have saved a lot of headache and time if I had done my fuel system 6 months later, because Aeromotive now makes a retrofit "340" style kit that will slide right into a hole you cut into the top of your tank with baffling built in. all you do is cut the pump sleave to the depth of your tank, install the lock ring, plumb and wire, and go.

 

I have an aeromotive stealth pump that's used im gonna be selling soon


http://www.jegs.com/i/Aeromotive/027/11140/10002/-1


used aprox 1000 miles from another vehicle of mine $100 obo