Quote:
Originally Posted by Dennis H.
Evidently the freeze plugs did not do their job, they appear to still be intact in the block.
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That's because they aren't freeze plugs, they are core plugs for evacuating sand out of the block during the casting process. They have nothing to do with freezing, despite the myth that has been perpetuated for decades.
https://en.m.wikipedia.org/wiki/Core_plug