I may be getting older, but I refuse to grow up!
About 70HP, but close. And with +1 valves and at least a +3TB. There are variables. Can you run 11.5 at your elevation and what fuel do you have available? And of course a fuel controler with timing, and dyno tuned. And not your back yard porter, check Cuervo, HPS, and the one Cammy likes.70 hp from a stock valve size ported head with 11.5:1 stock bore piston and a hc3?