Struggling at high rpm above 6000

Boy this sounds familiar ....
What cam ?
A little information from his other thread.

Hi,
My setup is:
Procomp heads with PAC SPRINGS ( Double springs with damper )
Solid cam .600 lift
Eagle forge crank, rods and pistons. ( Balanced )

At the moment I am crossing finish line @ 7200 rpm.

What is your feedback? Or what is the suggested max rpm for this set up


Maximum RPM under load




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