The reason that the top end did not get oil is because there are 2 passages that feed the rocker arms. These engines do not feed oil through the pushrods like GM engines, they oil through small passages in the cam journal. The cam has to be at a specific position for oil to shoot in, then it is forced through a passage in the block and head for each side. TO get oil to the top, the engine has to be slowly rotated while being primed. Once the "timed" passages line up, a copious amount of oil is forced through almost as a pulse. This was engineered to deliver the proper amount of oil to the top end based on demand. The crank gets the majority of the oil as it should. The cam lobes are merely splash lubricated from oil being thrown off of the spinning crank.
