You can turn whatever the hell RPM's you want.
Though, anything up there is just for show really unless you have the cam for it.
A stock cam falls on it's face after 3200. I mean the power takes a nose dive.
I have mine set for 4200, but my trans shifts at 3600.
The only time I go higher is on the dyno, just because it sounds friggin wicked when it's up there.