stock 318 cam specs

I hear you, but I am already in there changing timing chain, intake, carb and distributor, so a cam is a small step, and how tiny this cam is, it is bound to be a decent improvement
Yes it may make more power, but you first got to rev to where the power is. So if your tires don't spin, then you play the waiting game. If you have 2.45s or 2.20 rear gears, that's gonna be a long wait.