Oiling problem. HELP!!!

Engine is a 68 340 that was completely torn down and sent to machine shop for prepping. It was baked and then had the works done to it.

My problem came about when I went to prime the oil system. No oil pressure and no oil to the upper end. There is oil getting to the filter so I know the pump is working. I am beginning to think I may have missed an oil galley plug somewhere.

Anybody have any idea's or if you agree, where the plug I missed might be?

Jack