Orphan Part 2 .... Yikes!!!

I had an engine like that. Was a 360 with 340 pistons in it that I built as a nineteen year old back in the mid seventies,based on the Hoovers mover article but what I failed to know was thwe pistons were 10.5 to one 340 pistons and should of been 9.5 to one variety instead. Well I had to put home made water injection on it and run fifty percent 110 octane race gas in it to stop it pinging. Ran real strong , 13.5 sec qtrs. on street tyres even with the std 360 cam in it. Later on I pulled it apart and had the pistons cut down further and put a small cam in it and it ran real good and stopped the pinging so I deleted the home made water injection and was all good again. With the lower comp and small cam ran excactly the same qtr mile times as before.