CammedZ71

I have a 2005 GMC Sierra 1500 with a 500 hp LQ9. 44# injectors. My tuner said I should go with a 255 lph pump. I just spoke with Walbro and they have a drop in unit coming out but its a 4 week lead time. I need something now. Which pump should I buy? Is there a part number out there? What is everyone else running?

OHsixLS3

Im building a similar set up and will need a new fuel pump also . Like the OP said, any suggestions on pumps and part numbers ???

Jeebalow

iTrader: (3)

I have a used walbro GSS340 (it's a 255 lph) that I bought from another member here. Right after I bought it, I bought a supercharger so I am running a walbro 450 now. Let me know if you're interested in it and we can work something out on the price.

gamble686

iTrader: (3)

AEM 320 is the way to go. About the same price with 30% more capacity without overpowering your stock fuel system.

OHsixLS3

AEM 320, will definitely look into that one