I have a 472 Hemi with a solid roller that is a street car. It does not sound agressive enough for my taste. It is a Comp Cams with specs:
lift .616 int .577 ex.
285 duration at .015 lift
110 lobe seperation

I have an old Lunati roller left over from my racing days that I am toying with installing based on input from you guys. It has specs:
lift .600 int .602 ex.
.320 duration at .015 lift
106 lobe seperation

I know the bigger duration will give it a more aggresive sound but what is the effect of lobe seperation on a cam's function.

Thnks in advance for educating me.