Right now I just got the setup running on speed density..

-364 cu.in
-ported 317s
-ls6 cam
-ss4000 stall 4l60e
-3.08 gears
-10.4 compression

I have 60lb injectors with stock f-body railes and lines single intank racetronix 255 pump..

Its going lean at 5000+ close to 13 A/F.....

I was wondering if a single badass pump is availiable, or is a dual pump with twin 255's the way to go, one on the hobbs switch? or do people run both all the time?

 

i run 2 255s always and have for over 20k miles. mine is only a 5.3 but at 20 psi im still just fine.

i think you will be out of injectors at a low boost also

 

Once you get the fuel pumps you will probably need bigger injectors too.