Hard starts after running

I'll be watching.
Put my 318 together back when I was 17, around '03. I have no clue on my cam specs. I remember telling the guy I wanted the most aggressive cam I could use without head work. If that helps. The car sounds good, but runs a bit soft until I hit 3,000 with a 2200ish stall. If that info helps, cool.

Question is: should I adjust for taller than wide transfer slots without actually knowing cam specs?

*edit* never mentioned my carb - 20 year old edelbrock 1405. 600 cfm