In this article there is a interesting cam grind.

http://www.selectric.org/55chevy/soup.html

If their is anybody out there who could shed some light on the cam shaft that was mentioned in the article (in test #5) the McGurk number 18, 3/4 grind, I would appreciate it. I had talked to a cam grinder about it's spec's and about it being a split grind with more duration on the exhaust than the intake and he said his info indicated that those spec's would not work. ?? I have complete trust in the work from Frank McGurk in the article, but would like to hear from others on their opinion. I sure would like to try that grind.