Ok so I had issues with priming my oil pump today - welp that's resolved and I am happy about that!
However, in the topic on bf.c, someone said that I might have issues with my head studs. I drilled the head bolt holes out from 10mm studs to 1/2" studs, which is fine. Now, someone is telling me that I need to over-bore the stud holes because they have oil passages through them! Well I drilled the holes out to 0.5250" or 0.5350" or so, but still, what the hell? I remember seeing a hole adjacent to the bolt hole in the head, but it looks like a shitty hole that is from the casting and I am not sure how it could be considered an oil passage. I've never heard of this before but that doesn't mean much. Does anyone know whats up? Do I have to worry about drilling these couple holes larger? Is there really oil through a head stud hole?
Here is what I think they're describing: