Dodge Repair Questions? Ask a Mechanic for Answers ASAP
Big block or small block? Did the radiator flow freely when flushed?
If it's a small block they can be susceptible the the heads getting plugged up with gunk. If you were able to get a lot of crud when you flushed it, this could be the issue. It's also possible you have a bad head gasket or a cracked head causing the issue.