njm12333

I have a 2001 z28 t56. Currently it’s has hood scoop with slp and an ls6 manifold. It has headers and true dual exhaust. I’m looking at doing a heads and cam upgrade. I have some 243 to have done by Texas speed and looking at the torquer v4 cam. Upgrading springs, lifters, rockers, oil pump, and timing chain as well. Will I need to upgrade the injectors to get max power or will factory suffice? If I upgrade to like a 35# injector can factory pump handle those? Will I need better fuel pump as well if not?

Full Power

I can't say for sure what YOUR stock pump is capable of...

I can offer two data points:

1) Stock 04 Tahoe L59 (flex fuel) pump DOES keep up with a cammed LQ9 and Flex injectors through 6200 RPM with no problem.

2) Extreme case of stock fuel pump at maximum flow:
STOCK 03 Suburban LM7 fuel pump is feeding cammed 5.3 with 60# injectors at 177 kPa manifold pressure and holding 10.8 AFR up to 4400 RPM, definitely on the ragged edge here at 60% duty cycle, presume fuel pressure is No longer rising with boost.