I have a 05 magnum with 2.7 liter has 200k on engine. I was getting water in oil, I tore it down and found bad water pump shaft. Replaced water pump and put everything back together. I changed oil and drove it a couple days and changed oil again trying to get all water out. Everything with oil was great for several days but now I have water in oil again. So I was thinking I must have a blown head gasket so I pull engine back down and pulled the heads and checked the head gaskets but could not find any damage or sign of head gasket being blown.

Now I'm stuck does this mean I have a cracked block or cracked head or can there be something I'm missing. Any help would be great.

 

The only reason you should have water in the oil is a hole/ crack in the water jacket or a blown head gasket. the only way you are going to determine if you have a cracked block is to pull the motor and magna flux it. hope this helps and best of luck to you!