New life for an old 340 (stock stroke)

Keep in mind that you can get an engine with ANY of the cams mentioned so far to detonate if you are not paying attention to tuning... and can happen with larger cams too. So, if you are keeping DCR up to make the low RPM torque as best as you can (appropriate for a spunky driver/cruiser IMHO), it is more a matter of working with that fact and being aware of the care that is needed. I personally would not sacrifice low RPM torque out of fear; it's manageable where this is, IMHO.

That Comp cam does not change things hardly at all versus the 702. Intake closing angles are the same, as are the difference between advertised vs .050" lift durations.