1979 Pontiac Firebird CAM shaft

Engine Mechanical problem
1979 Pontiac Firebird V8 Two Wheel Drive Automatic xxxxxx miles

what kind of cam shaft can I put back in a 403-bored out 60 over, I want proformance and drivablity, and I used a blue strip, 1984 rv crains cam, before, something along those lines, Thank ya'll I don not want it to lop, but run really really good, Robert