I need to know whether or not 30# injectors will be enough for a cam a little bit bigger than the GM 847 along with a 100-150 shot of nitrous. Help is greatly appreciated as I will be buying some soon.

 

Is your nitrous kit a wet kit (fuel added by means other than the injectors) or a dry kit (fuel added by the injectors)? If its a dry kit, which one is it?

Are you saying that "a cam a bit bigger than the GM 847" is all that is done to the engine, other than the mods listed in your signature? No head work? If that's it, and you are running a wet nitrous kit, your stock injectors are fine.