I understand most aspects of the working of a cam but the centerline and/or separation angle (is there a difference?) has always confused me a bit. When looking at the CompCams line of cams for big block Mopar, I noticed they are all 110*. But when I look at the MP cams, they range from 108 to 110 to 112 to 114...

Can someone explain the reasoning behind different profiles and, in my case with a mildly built sub 9:1 compression B motor, what would be most beneficial (in cooperation with duration and lift of course). Thanks.