Cam recommendation?
While a bone stock LA roller 360 will be quick in a regulation A body, those cams are soft at best. The fact that you like a little more performance leads me to think a upgrade is really what you need to satisfy you. As mentioned earlier, a increase on the intake at .050" in the teens would make a big difference from a stock grind. I'd talk to a cam grinder like Oregon, as "fishy" mentioned. They are reasonably priced, and can get you really close to what you need.
P.S. If you do consider upgrading, valve springs & pushrod length could come into play?