Here's Crane's first listing for the 348. You may or may not experience some detonation with this cam at 9.5 c.r. due to an early intake closing point at 25 degrees ABDC.
http://www.cranecams.com/?show=brows...tType=camshaft

This might be a better choice with the intake closing at 36 degrees....
http://www.cranecams.com/?show=brows...tType=camshaft

Don't take my word for your final choice, I'm just throwing out suggestions. The best way is always to call the cam company and discuss it with the tech guys.

My whole point is that you don't want to build too much cylinder pressure that you won't be able to keep detonation under control with available pump gas. The 348/409 has a pretty big chamber which is formed in the cylinder, with the cylinder head being flat.

Use the Crane specifications and description of characteristics to compare other grinds to.