i want to run the factory oil cooler line but need to know where i can tap for my turbo feed line. can i go where the plug is on the side of the cooler block?

 

remove the plug from the drivers side of the block right next to the timing cover

 

im gonna guess and say thats not filtered.

 

Nope not filtered.

I'm planning on feeding off the cooler line port in/out. My engine does not have cooler, only aluminum part to redirect backinto oil pan. I'm going to drill/tap for oil pressure source.

 

OK very similar situation. I'm not real familiar with how the LS1 oil passages run so I drilled out the blocking plate on the oil pan. It was perfect for a 1/8" NPT tap and then I installed a -4 fitting in there. Then I had an after thought. The two holes are undivided coming coming into this plate. Is this like a feed and return for the oil cooler cars? I just don't want unfiltered oil going to the turbo.

 

Oil cooler is exactly what thats for. It IS filtered oil. I verified this by tracing the passages in the block/oil pan when I had my 5.3L apart.

 

I had traced the passage down and assumed that I was good but I didn't wanna make a fatal mistake based on an erroneous assumption.