360 block limits

360s can be stout when prepped properly. Do your research, take your time and talk to the right people and they can be pushed hard. I'm shooting for 600 N/A on my 1970 factory 360 block with W9 heads HOWEVER I am talking to tons of hardcore racers and machinists making sure I know about everything I can do to make it survive for a long time if not for good before I even start buying the parts. I'm going with a machinist that is a former Mopar 410 Sprint car racer and he is advising me the whole way. A friend of mine has had 600 horse 360s that he threw a 250 shot at on top of that and they survived for a long time until the split down the lifter valley......