If your Rad man is reputable and I assume he is, when he pressured the core up regardless of heat or not the core would leak if it had a hole or crack. I'm inclined to agree with 66/stepside.


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
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USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)