Well, I finally have my block @ the machine shop. Now Im looking to build the head. I hav a boosted z6. My goal is around 350/400hp. My question is, can I get away with stock valves, supertech springs & retainers, zex cam, stock cam gear, and tuned on Hondadata S100? Thanks in advance for any input.

 

350'ish would be about the limit i would push pump gas.
my y8 has comp. springs/retainers, zex cam, and stock valves and I made 301 whp @ 17 psi on a GT2871R.