Here is the oil filter pad. It has a third hole:
2 – Oil comes from the stock oil pump in the oil pan.
In a stock block, it goes to the oil filter.
1 – Oil goes back into the block.
In a stock block, it comes cleaned from the filter and feeds the oil galley in the driver’s side/left side of the block.
3 – 303 MAGIC. This port goes directly to the high- pressure pump.
From the pictures I have seen, there appears to be a pressure bypass here. I am stumped on what it connects.
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