Install the stud in the block tight. Mark the stud and remember the hole it came from. (Which side of the block)
Put a mark on the top of the stud toward the oil hole in the block.
Use a ball mill to cut an oil passage relief in the stud at that mark . You now have a oil passage. Do not do this with a cut off wheel or grinder.It will ruin the stud. It should be done in a mill with coolant flow.
When you install the stud the passage you put in should line up with the hole in the block as pictured. This is done on every LA he studs.
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