I looked at the Go Cat site and the guy from Oregon a couple of years ago. These flashy sites tell us what we want to hear and believe, so they suck us in. You had the stones to admit it, so hats off to you.
Sounds like you have the newer 8BA pumps. I believe the top hole was added to aid cooling on these engines over the earlier designs. Don't know why that was plugged on yours. The older ones used oil from the block to lubricate the bushings on the pumps, hence the holes in the front of the older blocks that would need to be plugged if using newer pumps.
As stated earlier,
Quote:
Originally Posted by flatheadmurre
Start by getting the coolant passages clear...get pump off...check that the block has been cleaned in the waterjackets.
One step at the time verifying what has been and not been done.
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Mike