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You know those are not really freeze plugs but are there to clean the sand out after the block is cast. I use brass plugs and JB Weld. Never had one leak or blow out. Brass does not corrode/rust like steel plugs do. Re placing them could be a job but I ain't never replaced one so I don't know.



Same here, after almost wrecking my 69 Dart when a freeze plug flew out on the track I started using JB-Weld on all my freeze plugs.