Mike, not all had the mystery bolt with a hole in it. Did you assemble the motor? Under the side cover (behind the dist. where the valve lifters are) look to see if there is a copper line from the rear cam bearing to the center of the block,this feeds oil to the rocker shaft. It may be plugged with dirt, it may not be there at all.If you look at a diagram in a shop man.it will show the path of the oil through the motor. You will see where it feeds the rocker arm shaft. Like DAve said it should only take a minute or two, if not you need to look for a blockage.
