1972 318 need more power

A nice upgraded cam would be something like this Crane I used to run.

216-228, .454-.480-112
Does not require a upgraded stall converter. I would use 3.21-3.23 gears at a min. With the stock tire.

Other cam companies have similar grinds. Comp, Lunati and even Summit racing all have similar spec'd cams. The Crane above is on a 112 C-line. The idle is good. A 110 C-line would have that muscle car rump to it.

If there is anymore work to "that engine" I would lightly mill and bowl port the heads.
Everything else is there. You should be able to run in the 14's (without head work) with those cam specs.