About to mod my virgin 318
I think what you want, there is as close as you can get to a modernized version of the old 68 340 stick cam. It's sort'ha like the old 350 hp 327 Chiv cam -- a pretty good cam for a lot of mild street engines in it's day.
I'm in the same boat as you, except for now, have TBI fuel injection, another story
I scored a low miles, mid 70s completely virgin 318. Put a Performer RPM, Edelbrock 600/625 on it, recurved dist, and a mild, VERY mild solid lifter cam very close to the old 340 cam, and headers. It has a lot of snot for those little heads and low compression