head bolt bulge in runner?

BJR. I think you've misunderstood me. I'm not trying slam your results. I'm sure you're getting fine results. Nor am I back-tracking. I'm merely stated that all flow numbers are going to be different from bench to bench, operator to operator, so don't get caught up with numbers. And I see you mentioned you did it with mp heads. I thought we were talking about old heads. And as far as cast vs aluminum. I'll take the later since they can be repaired much easier. I'm also welll aware that all manufacturers have their good and bad pieces go out the door. Chrysler included. My W2's had .005"-more run-out as delivered. And I don't want to get into spring pads.