318 Motor Priming Issue
Check to see if you have the rocker shaft upside down or turned the wrong way. That will be the simplest thing to check for. The 2nd rocker shaft bolt from one end or the other will be where the oil comes up to the rockers. While you have the shaft off to check, run the primer drill and spin it over a time or 2 to see if oil squirts out. If it does, problem is from there up. If it don't, :( !