Spec-ing cams?


what do u need to spec a set of cams properly?
bore/stroke? valve size? revs? estimated power output?

my car is running over the 450+ power mark.
but it stops making any more power after 6.5krpm
i use it in fwd drag racing and i need a higher powerband.

so looking into having some cams either made or buying some off the shelf

any help or advice/discussion questions wont be missed!
thanks, chris