I've spent the last two hours reading all the previous posts on this subject. Please help me make sure I understand. My engine had the external "supplemental" oil line running through a hole in the center of the head on the passenger side around to the other side oil chase.
My understanding is that this line supplies oil up to the rocker assembly because of the mismatch between the block and head, etc. I've also read about the center head bolt that is drilled to allow oil to flow through it to the same area.
My question is can I do away with this supplemental line if I use the drilled bolt, or is there something else going on here as well? Thanks for the help.
