Re: 1956 374 Freeze Plugs

Posted by Jack Vines On 2009/4/28 19:14:18

FWIW, I always use sealant on my core plugs. Rebuilders don't use it because they are in a hurry.

The Packard uses an unusual shallow 1-49/64" soft plug. Most mechanics don't know this and substitute a 1-3/4" or who knows what. The wrong unit is most likely the source of the problem.

thnx, jack vines