Re: 59 AB engine rebuild
What he's saying is that the steel/clad fire ring can get really close to the heat of the bore, which can cause it to prematurely fail (causing a blown head gasket). You'll probably have no problem with regular gaskets - but, if you go to the 'Big-Bore' gaskets, you'll have a bit more margin for safety and the issue goes away. Hope this helps.
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