Need Advice. Coolant Leak

[69chargerboy]

I found to have a coolant leak that seems to be coming from the right rear most exhaust manifold bolt on my 440. Any suggestions? I have never had this before. The engine has been re-built, still breaking it in. I drive it up and down my block a couple times these past two weekends. Thanks, John

[68CoronetRT]

If your running the stock heads I believe the bolts that go through the exhaust manifolds are what seal up those coolant passages.

I had to drain the cooling system/block and take the bolts out multiple times because I could not get the headers to seal. Every time I did this I would dap a little RTV on the end of the threads to seal up the holes.

This gets very annoying after a few times when the header gaskets blow out. Sounds like you can get away with just doing the one bolt.

[Cooter]

If your running the stock heads I believe the bolts that go through the exhaust manifolds are what seal up those coolant passages.

I had to drain the cooling system/block and take the bolts out multiple times because I could not get the headers to seal. Every time I did this I would dap a little RTV on the end of the threads to seal up the holes.

This gets very annoying after a few times when the header gaskets blow out. Sounds like you can get away with just doing the one bolt.

:2thumbs:Exactly.

[69chargerboy]

Sweet! Thanks! I was expecting worse..

[C928BRAN]

Had the same thing happen to mine when i put the engine back together. took the bolt out, and put some hi temp rtv on the threads. never leaked a drop since