The lead plug has no hole. It is completely blocked. The block does has the oil tube behind the side cover. Thanks for the links. I checked out both sites before I posted. Still confused as the lead plug.
Per my initial post: Head: 3836850 Date: 14G2 both the date code and the casting number of the head are under the valve cover. THe date code is on the left, the casting number (3836850) is on the right.
If you look at the "6" in the casting number, look straight down and you'll notice the faint outline of a "T" outside the valve cover. I'm assuming it means Truck.
My bottom line question is: What rockers to use with this configuration. Pre 57 or 58-62.
I'll try to get a pic of the side of the block later.