Freeze plugs starting to go...273 V8

toolmanmike said
I had one leak on my 66 Dart with HP273. I tried the stop leak trick as a temporary fix but the leak came back. I replaced the plug and flushed the heck out of the block when the plug was out. The outside of the plug looked like new but the backside was rusted through. I also took the block drain
out of the other side and dug the sludge out of that side also. I would
reccomend you pull the engine and replace them all. The engines in the
earlier Mopars are pretty easy to pull and the job would be done right. It would be money well spent. Mike

After workin 18 years in a chrysler dealership as a mechanic I strongly request that you pull the engine and replace all the frost plugs. There two at the back of the block between the engine and transmission as well as the ones on the side. Don't forget that there are also some in the cylinder heads at the back. I have seen where people have replaced the frost plugs and knocked the old ones inside the engine and left them there. This causes cylinder hot spots. Better to be safe than sorry.
kenny b