good street cam for 360 magnum

Valve job,is drive able. I have seen/heard of tight valve stem/valve guide clearance. As long as the springs get near 300-320 lbs at full lift, should be o.k. to 6000-6500.

I'm new at this...so are saying that if I keep the factory heads (no cracks)...
a good valve job and stiffer spring are a must...

thx for keeping the thread alive