I am putting together a 302E and whipple 2.3 and have a question regarding injectors. Will the 47#er's be enough for 550-600 rwhp. I plan on going with 15psi (pump gas only)
At stock delta pressure, no. But you can raise delta in the tune as long as you have the pump(s) to support the higher pressure demand since flow goes down.
Good read on GT500 fuel injectors, how they flow and what they can support.