That depends on a lot of things. How much is not enough? What is the combo? You can crack a block with one detonation on a supercharged car. On the other hand, my stock motor with a beat fuel pump was pushing out a whole 20-25psi of fuel pressure and never had a problem, even giving it a beating. When I took it out, it still ran fine.
It is a 347 car....i am putting a vortech v1 s trim on it...5 to 6 pounds of boost...will that be fine???? Stock fuel pump and 24 pound injectors...i will change later but cant yet...$
You need more fuel than that. I have a 255lph and 30's on my N/A 331. After spending all that money, I would strongly suggest upgrading the fuel system.