hi everyone I have a 2002 Silverado rcsb that I will be doing lq9 swap on it!!
mods are 228/232 cam, full cnc'd 799 heads by AI, 90mm tb with a nnbs intake mani right behind it, efans,3800 circle d stall, efans ,longtubes, ls7 injectors, basically will be 11.0.1 compression. I was wondering if my stock FUEL PUMP will be good enough for this set up or I will need to upgrade?? all info will be greatly appriciated

 

You'll probably want at least a Walbro 255 in there with the mods. If it was just a stock 6.0 you were dropping in you could get away with the stock pump.

 

I agree with the above but would also look into the AEM 320LPH pumps that SDPC have to offer. They give you a bit more flow for roughly the same cost. And they have one that is E85 compatible if that's anywhere in your future.....

 

I ran my stock pump with a LQ4, 230-238 604 604 cam, TBSS intake, 42Lb injectors, 10.8compression, PRC 2.5 Heads, long tubes etc.... it did just fine
I am not sure of the difference in stock pumps between ours years tho.

 

hey guys thanx for the all the info, been very busy well I ordered a walbro 450 ehich is e85 compatible and just got it yesterday and I am planning on going e85 later on also!!!! any feedback on this pump my tuner recommended me but just wondering what things have you guys heard about it?

 

good pump. just upgrade your wiring .pump will burn stock wires

 

What type of wires do you recommend?? Im a newb at this fuel system stuff!!