Threading the "freeze" plugs is not uncommon. A few high end engine builders do it.
If an engine block is gonna crack from freezing, then it's gonna crack. Those plugs aren't really designed to save an engine from cracking. Sometimes they do, sometimes they don't. They're only there as part of the casting process.
Old BOSS 302 blocks had this done from the factory I believe.
If an engine block is gonna crack from freezing, then it's gonna crack. Those plugs aren't really designed to save an engine from cracking. Sometimes they do, sometimes they don't. They're only there as part of the casting process.
Old BOSS 302 blocks had this done from the factory I believe.
Tapping Freeze Plug Holes - Club Cobra
I started tapping a freeze plug hole the other day on my FE block. Dennis with DSC Motorsport said I needed to use a 1-1/2, 11.5 NPT tap. I borrowed
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