Chewing up a cam lobe is a real bummer. I lost my original 426W engine years ago that way. The lobe material went into the oil pump and then that sheared the pump drive and once oil pressure went away the rod bearings spun. You caught your issue sooner than I did!

I wrote an article on the subject last year. It is in the tech archives on this board if you want to check it out. I talked to a bunch of people in the industry and tried to find all the newest parts on the market to help flat tappet cams live. I think it can be done if you use the right oil, lifters, springs, coatings, etc.

http://www.moparmax.com/tech/2011/vi_8-flat-1.html