Now I have only seen in a few places on the internet that hypereutectic pistons are good for up to 475 horsepower. The thing is I have not seen evidence to back it up. Now I know for a fact these pistons are structurally stronger than forged pistons, but they only have one chance vs. detonation. Now with that said what is the most power have any of you seen reliably with hypereutectic pistons? I'm looking for well above 500 if anyone has experienced it. If not I'm going to make roughly a 600 hp naturally aspirated Pump gas motor and discover how long I can make it last. I will not be worried about detonation because I have a stand alone fuel injection system and will be monitoring even the slightest amounts of knock and fine tuning it along the way. If I must I will tune the vehicle to run on E85 because that will practically eliminate any chances of knock if I can't avoid it on 93 octane.