220 cam
I had mine set at 6600 and shift at 6400 or so, and I'm conservative person.
You won't get all the HP that's in the cam, but you'll be safe

I have been told that 6800 is still fine, but I just didn't want to "test" the stock internals to that limit due in part that I'm not a "straight line runner", I autocross.
.....I now have a 224/581 on a 112 LSA +4

