How much a of a gain will i get if i apply cams and cam gears to my set up?

If i was also to add injectors at 310 cc what gains will i get as well?How much a of a gain will i get if i apply cams and cam gears to my set up?
depend on what You want from Your engine,





more horse power?at what RPM You want it low or high.


check what the camshaft is for ,they are very differents,(meaning only for , the Pro for race)





strip race engine


race with curbs


street legal


a wheel peeler for a smokie movie.(never race ,just peel the tire but looks good in a movie.)How much a of a gain will i get if i apply cams and cam gears to my set up?
Depends on what your setup is to begin with.