My painstaking education with a 55 235 continues. I got oil flowing through the tube down the side of the engine ( under the side cover) but the passage through the block is stopped up. The passage on the head is clear but something is wrong at the engine block. I was blowing air through it in both directions but air is barely moving through. Some type of debris must be in the passage. I removed the head bolt where the oil flows up and a coat hanger will go down through all the way to the turn. Any one have a diagram showing this oil passage so I can see what I am dealing with? I am going to try carb cleaner next to try to clear this path before I resort to bringing the oil tube out of the side cover and piping it into the hole on the head that has a pipe plug in it next to the oil passage.

1950 Chevy 3100
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