A 470 with a flat top and 80cc chamber should get you closer to 11to1. I know you're not asking for advice but if you don't already have the parts the cam could use about 10 more degrees. And if you bought and indy shortblock I would do a teardown and have it all checked out. I was hoping someone else would say it. A little more stall would be good too. As is I would also guess around 550hp.