Originally Posted by krautrock
you need to look at the shape of the lobe and without getting too deep into it, look at duartion @ .050 and also @.200, you have to find a lobe profile catalog usually.

here is an example from Howards.
https://www.howardscams.com/sites/default/files/lobe%20list%20email%201-20-2014.pdf...

YES, perfect!

This is exactly the sort of information I'm curious about, especially the theory behind things like the nose duration, etc.

So given that I picked up a custom ground CompCams hydraulic roller (thus my focus on the CompCams parts, not meaning to ignore the other guys) I actually reached out to their tech folks and asked for the grind card, which they shared. The cam has the 13084 & 3039 lobes, these are the Xtreme Energy XFI rollers:

Lobe 13084:
.006 dur is 290
.050 dur is 240
.200 dur is 163

Lobe 3039:
.006 dur is 300
.050 dur is 248
.200 dur is 169

Now, if I had that same info available for the other grinds I would have happily posted those as well, alas, I do not.