I have a 2000 gmc sierra with a powerdyne supercharger. I want to run the 9psi pulley but don't think stock injectors and pump are enough. Or maybe I am wrong. Anyways, what is a good fuel pump and injectors to buy, how much and where? I think Horsepower will be less than 400, right now I am getting 291 HP @ 5 psi.

 

SVO 30 lb injectors, Walbro 255 pump....that will be plenty with a little room to grow

 

Sorry bro but SVO/ standard injectors don't fit on the trucks. You'll want to get the 8.1L truck injectors (30lbs)or the Marine 8.1L injectors (42lbs). The 30's will be more than enough but if you want to run over 450 I'd just get the marine injectors. One Walbro 255 pump will work fine.

Brett

 

i did not know that, i assumed it was the same LS1 setup