I'm thinking of buying the 330 hp GMPP 350 HO longblock crate engine, and then topping it off with an Edelbrock Performer RPM intake, and a 750 cfm Holly DP. I'll also want to replace the factory cam with something hotter (I'm not sure what cam specs would fit this combo best, any suggestions?), and do some port work with the heads. Does this sound like a good combination of parts? Do you think I'll see an increase in power from the stock specs of this motor (330 hp and 380 ft/lbs torque)? Finally, for estimating rwhp, what multiplication factor is usually used (I think I've seen 0.85)? Thanks everyone!

edit: Also, I was thinking of adding 1.6 rocker arms

Ok, well after doing a search my motor questions have been answered... so nevermind!