How much power or duty cycle is/are stock Z06 injector god for... At 500 hp at the crank, are these injectors on the border line?? Can stock injectors make it to 550 hp?

 

28.8 injectors @ 4 BAR are good to 420>450rwhp (~ 520 fhp) depending on fuel pump pressure (assuming it is steady 58 psi)
The variation is due to the fact that f-body pressure regulator is in the back (by tank), and doesn't garantee 58 psi at the rail. Racetronix comming up with rail reg. that would cure that.
Keeping in mind that one should stay in the 80% max cycle.
I have a PnP racetronix fuel pump kit that gives me 62 psi and 58 psi @ WOT. (you can see 4 psi drop)
Combined with SVO 30's (35.4 @ 62 psi), I'm able to run 400rwhp N/A + 200 shot dry for a total of ~560 rwhp at 83% duty cycle.

 

Clarks Zo6 made 467 rwhp on speed incs dyno. Duty cycle at that point was 94%. 100% pure stock fuel system.

 

I put down 457 rwhp with stock injectors. That's approximately 525 fwhp. It's still a little rich though. Probably has 7-8 more hp left.

 

Ok, so I'm ok until 525 or more hp for now. I'm not sure what my duty cycle is right now, but is there anything to be gained rom upgrading the injectors now?