injfuel

Yep I got their "hot" wire kit and "intermediate" harnesses today so I won't have one factory fuel pump wire , and I have FIC 80lb injectors as well , volts will make or break a fuel pump

rio95

Why are u going with the aeromotive 340 pump instead of the walbro 450 that every seems to be having luck with? Does it maintain the jet pump or something the walbro doesn't?

Maybe I need to reread this thread but I'm still confused how the stock pump compares in flow to the LPE kits and the walbro 450. Maybe u can summarize it.

injfuel

I had a brand new 340 in my garage from a build I did for a guy and he used a different pump so I ended up with it , I agree with everybody who says the walbro 450 is the way to go but I'm 100% certain that the 340 I'll be using with the Racetronix wiring will be PLENTY sufficient for my build
(Assuming the pump holds up , apparently people on here have had back luck with aeromotive) and no aftermarket setup maintains the jet pump except the Racetronix drop in kit (isnt rated for e85) and the Lingenfelter kit which they say is a nice drop in kit that utilizes a 450 walbro and is a completely stock style fuel basket , you just drop it in and plug everything up but it's over $400 , and your guess is as good as my mine on the stock flow as I never got the factory LPH size or GPH flow

rio95

I'd spend $400 for a drop in unit if it were E85 compatible, retained jet pump, and flowed about the same as a walbro 450. I just thought it flowed less. Maybe I'll have to call LPE, but I think I'm pretty sold on the 450 pump. Just need to piece together a shopping list, which is a little challenging cause people seem to all use different parts.

injfuel

Shopping list for what ? We all use the same parts to switch to flex fuel unless you buy the kit for $400 which comes with everything , here's the link for the lingenfelter fuel pump kit , •Dedicated motorsports sells the flex fuel it

http://www.lingenfelter.com/product/19149687.html

rio95

I'm talking about the pump, not flex fuel.

I just need to nail down part numbers for pump, pigtail, hose clamps, fuel line, and anything else I might need (new stock sock maybe). I've see people use different diameter and length lines and different clamps and connectors.

injfuel

Oh ok , well you said you'd spend $400 for a unit that would drop right in and retain all factory type functions while being rated for e85 , the Lingenfelter pump kit offers all those things and is $380 , so no need to piece together a pump kit right ? Their kit has a 450lph walbro in it so should support most all N/A hp goals

rio95

It appears to be $500, not $380.

http://www.lingenfelter.com/PROD.htm...5#.WIo3qk3rtmN

Also, the 260lph rating is throwing me off along with the 650 crank HP rating with E85. It doesn't sound like it'll be enough for 650 rwhp without a BAP so I assumed it flows less than a pieced together Walbro 450 setup, which I know IS enough without a BAP.

injfuel

Yea I apologize for the price I quoted I somehow listed the price for a different item , but here is LFP quoting specs on their pump and stating it's an e85 walbro 450 , also stating why they say it's rated at 260lph to the rail , so my thought process is if it's a 450 walbro why can't it support the hp the guys that are just installing just the 450lph pump , I understand the different things involved in the factory style setup that might drop the rated LPH but we all know the 450 by itself is more pump than most of our power levels need anyway

The factory Z06 pump is not rated at 260 lph at 4 bar (58 psi) when you are looking at flow to the rail (accounting for the venturi pumps).

The pump used in our E85 compatible C6 fuel pump module is rated at 450 lph at 43 psi pump only. But when you raise the pressure to 58 psi and account for the losses in the system due to filters, check valves and venturi pumps then that is where you get the 260 lph.

All of the power levels quoted below from LPE are crank horsepower.

rio95

I see what you're saying that if they are using a Walbro 450 it leads you to think it'd support roughly the same power unless fittings, valves, etc. in the assembly reduce it more than what these other people are doing.

The crank HP ratings are what worried me. 650hp crank won't suffice. $500 is pushing it though so I'll probably just piece together myself. $400 might have been a different story.

injfuel

Your right with their advertised hp ratings it won't , but I don't see how their advertised hp levels are accurate because just at 15% drivetrain loss 650 flywheel is only 550whp , I don't see how that 450 wouldn't support more than that considering I know for a fact guys that are running the STOCK fuel pump with Racetronix "hot" wire kit running on e85 making way more than 550whp

jayyyw

What's everyone using for a fuel filter, stock?

rio95

yeah stock sock.

jayyyw

I mean as an aftermarket inline fuel filter. Or do you find the stock unit is good for e85?

injfuel

You could add a 40 micron inline filter , other than that everybody relies on the stock fuel filter in the bucket , NOT THE SOCK , the fuel lines run up to a cylindrical housing that holds the fuel filter

jayyyw

Yeah, I did not mean the sock.

injfuel

It failed after less than 1000 miles , it was a dumb decision to try it , buying the walbro right now

Unreal

1000 is pretty good. Seen plenty of them fail in 400-500 miles, so you got at least 2x what I would expect.

Make sure you get a real walbro and not a china knock off.