What kinda power should I expect?

Unless you have flow bench data....anything would be a guess...

Correct.. but Your guesses would be better and more educated than mine. I'm going to dyno tune it and if it puts out 270 rwhp then I know I should expect more correct? It's basically bench racing... just for fun I guess. It's not like you built the motor and I'm holding it over your head.. I just wanted an educated guess on hp. I'm sure someone has a 360 similar to mine.