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OK, I have one valve cover off. There are no notches or markings on the ends of the shaft at all. I believe Buildanother said that only applied to small blocks. I guess I will pull the shaft next. Besides the oil hole facing down what else should I look for to verify the correct orientation of the shaft? I had it running for a while at an idle. There is plenty of oil puddled in the head so it must be oiling somewhat.

Small block is where there are notches on the shafts that are used as indicators - not on BB's. As stated above.
Hey Prime the engine and if you have oil a good supply you have no problem. Remember that only one side feeds oil at a time depending on camshaft position to the oil gallary.