.0001 is common practice where I work. Making ammunition and can tooling is high tolerance stuff. They had to buy a couple 2 million dollar machines just to check the stuff.
Chrysler, and most American engines were not that tightly done years ago. The Japanese have shown that it makes a huge difference in quality and relability, if done correctly and things have changed.
Back to the real issue: If you suspect that Comps cam isn't up to spec, send it back. I've heard a lot of people complaining of loosing engines to Comp Cams parts and I won't be one of them.
