Lee,
What are you looking for in a cam. I'm wrapping up my build this week and found several web-sites helpful. I ended up picking a Crane Cam, based on an article on a 351M/400 build-up in a Petersen magazine. The cam used in the article was a Comp Cam, but is now a custom grind. Crane had the same specs. as a stock cam. According to the article and testing from their buil-up. Its a really strong low-mid range cam with a fairly lumpy idle.
Advertised/Actual Intake - 288/226
Advertised/Actual Exhaust - 292/230
110 Degree Lobe Seperation
www.cranecams.com
Send me an e-mail and I can e-mail you the article if you like.
-wadesdad