Cam wiped out, what the hell did I do wrong?!?!?

I dont want to see any bores larger than .906. On a convertor, with a 4" stroke and a moderate cam, I think a convertor of 2500 max will be fine. Street car. Not strip car. These engines pull hard low and you just waste a lot of energy on the street by spinning the convertor to 3500 or more.