if you have a good drill..keep it turning your primer while you turn the engine 1/4 at a time,,it will get the oil to the rest of the rockers...just a note,,you need to have a thin oil like 5/30 in it for breakin
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it sounds as if you need a drill that turns more rpms...it takes a real good one for this...the engine seems to be ok from what you are telling me,i think it would be ok to install and start it now,just pour a little oil on the rockers...also after you start it make sure all the push rods are turning to keep from wipeing out the cam..
i didnt know you never had the tool..sorry..