I have been looking at threads and searching for a few weeks now trying to figure out what I need to do on my fuel system, I am more confused than when I started I am planning a 408 stroker build for my 2003 2500HD CCSB, I am staying with the fuel injection(larger injectors if needed) and no boost but might want to go nitrous in the future. I will be shooting for around 600hp and then maybe a 150-200 shot of nitrous. Sorry I know I am here but could use some guidance,

Thanks

 

So I know I have a return system, can I just install a larger in tank pump and larger injectors?

 

Yep, walbro 450 and 60lb/hr injectors and youll be fine.

 

Ok so I don't need to change anything else in the system? I will be going with a FAST LSXR Intake Manifold with new rails.