Break in time for new engine

I run mine thru several heat cycles after cam break in, change the oil. Head to the track.
1st pass shift at 4500, let engine do the braking to "load" the rings.
Next pass 5k or so, same engine brake.
Little higher on the 3rd
Then let er eat.
You may also notice a drop in operating temp once everything is seated and happy.
Many ring manufacturers claim they seat upon start up.