oil pressure

To properly break it in, you do the initial 20 mins at 2000 rpm for the cam. But to complete the break in you need to have it in a vehicle and accelerate from 30 mph to 50 mph a few times up the road. This raises engine vacuum and helps the rings seal better. Also don't rev the engine too high in the first 500 miles and don't hold a constant Rpm at highway speed. After that consider it broken in.