Top End Not Getting Oil (360 LA)

In addition to the above, the oil to the top end ONLY happens as the cam briefly aligns it's oil holes with the passages in the block coming up to the heads. if you did not crank it enough, the oil won't have time to get there. Easiest way is to prime pump with a drill, and slowly turn engine with wrench until you get oil holes aligned/ oil up top. SOMEWHERE on this board, folks have published rotational degrees of crank at which this happens

If you can NOT prime pump with a drill and shaft, I would REMOVE the rockers and plugs so that you are not impacting the lifters with high pressure springs and crank on the starter until you get oil up top