No oil to top end
If you have oil pressure.....Cam holes need to be properly oriented. I did this today and my rockers poured oil.......
Driver side rockers get fed when balancer shows 20* after top dead center on the exhaust stroke.
Passenger side rockers get fed when balancer shows 90* before top dead center on the compression stroke.
Of course, this refers to #1 cylinder.
Hope you solve your problem.