How many broken 360 blocks have you seen. I beat on my old 360 (408) through 3 rebuilds and in need of its 4th when after I pulled it to rebuild it my son asked to borrow it. We knew better or at least I did but my son needed an engine so dad being dad I let him borrow it. 6 months of racing later it spun a bearing and broke a rod. It ran 9.74 in the summer heat at keystone at 2880 pounds in my car and 10.0’s at keystone in his car at 3200 pounds. That block took a beating through all those years.