The engine was rebuilt before I received the truck. It has a new timing cover. I did a compression check of all cylinders and adjusted the valves.
On the driver side of the engine block (turbo models), right in front of the bell housing, there are two wholes drilled and tapped in the block. From what I could tell they are the factory oil and coolant supply for the stock turbo. I plugged one and utilized one. Based on what I could identify I plugged the oil feed because I had already bought a long obnoxious stainless braided oil feed line that runs from the passenger side of the block, over the top of the engine and to the turbo. The second, what I think is a coolant passage, I used for a coolant return line off the turbo. What I am hoping and have yet to test is that I mixed the two up and have been dumping all my new coolant directly into the oil pan. For the sake of not pulling the engine out and rebuilding everything I hope that is the problem.
If someone has a photo of the driver side of the block and can label the two feeds I would appreciate it.