Nnbs fuel bucket dual pumps
 

Does anyone know at what point will the stock bucket dry up with 2 Walbro 450 pumps in the tank on a 2012 flex fuel Silverado?

Running twin 450's in an 07 NNBS bucket. No holes cut. Not boosted yet but have had no problems at 1/4 tank. When I pulled pump assembly, gas guage was at a 1/4 tank and fuel was slightly above bucket level. Obviously only running 1 pump until I get my Procharger on.
https://cimg2.ibsrv.net/gimg/www.per...b7d4ee6731.jpg

https://cimg8.ibsrv.net/gimg/www.per...40375cec66.jpg

So you're running the fuel sock outside the bucket? Or is that a fuel return? Can't tell what the black 90 or T is that comes out of your bucket to th big sock. But thanks gives me a good idea of how 2 450's fit in the stock bucket I haven't had mine apart yet to see how they will fit!

Also are you running the stock intake manifold? If so what did you do for rails with the return fuel system? I know Holley makes a nice set for $140 says they fit ls1,2,3,6 and l99 but nothing about l9h or l92 truck manifolds. Might try them see if they fit and I can keep my fic 1000cc injectors.

PM me your number. I do have Holly rails.

Adam

Do either of you guys have more pictures of your dual 450 installs?

PM me with your number and I can text more.
Adam

I know old thread. Sorry but working this now. Want to know did you by pass the FPCM

Avoid the headache, just bypass the FPCM.
Specially on a dual setup.

just tryin to divert CEL really.