So to the original poster, two things here
1 - If you are looking for the C3AZ-6250-T cam for a reason, for instance you want a true blue restoration (for whatever reason) easy to have it custom ground. Cam companies have a ton of lobes to pick from. Nice thing is, today, as Brent and I discuss regularly, you can add some lobe taper, Nitride treatment, etc to make it less likely to bite during break in, you can do that on a stock cam or a hot solid flat tappet.
That cam is a 282 adv I/E, .440 lift, 114 LSA on 112.5 ICL. Very old school and would require 10.75:1 compression in a 390. It would run decent if you blueprinted an engine to match that cam, but you could get better with modern lobes and cam timing that uses more of the intake stroke and likely make significantly more power, even with similar manners if that is the goal.
2 - I will tell you this, it's true a cam doesn't know what color the engine is, but it does need to match the engine design if you are going to spend the money. Runner lengths, port cross section, lift limitations, port flow characteristics, exhaust port and header design, just to name a few are different on every engine. It's far better to have someone who has experience with your engine as you can be double digit HP off, or kill certain portions of the curve, but end up paying more.
If the pure resto doesn't apply, post what you are trying to do with the car, as well as the other details of the build, many of the guys on this forum can set you straight. Keep in mind, to optimize, everything has to be measured. Also, even if it is a stock resto, a modern cam can be made to sound like the stocker, but perform better in your RPM range.
