Milling big block heads?

I rana set of 516s that I ported and had milled .100" There's a lot of meat there. But, beyond that, I wouldnt bother. As I said, you have to make everything fit after. That engine made plenty of power and was 12:1 when it was all said and done. I can sonic test them now... I'll go get a few numbers at some point and post them. I have 516s, 346s, and 906s downstairs.