/6 running hot - what are your temperatures?

TrailBeast said
So much for that theory.:D
Still though, with 240 at the T stat housing and 220 at the top hose points to low/no circulation.

Example:
I have a mechanical temp gauge and a thermostatically controlled electric fan controller is in my top hose right at the radiator.
The fan controller is set to turn the fan on at 210, and when the fan comes on my mechanical gauge in the intake shows exactly 210.
The point here is that the temps should be really close to the same at the T stat housing and the top hose at the radiator.
This is why I suspect circulation.

You don't have a reverse direction fan by accident do you?

It's a stock exhaust fan from an older dart. I made sure it was the same direction.

My guess is the block is heat soaking a lot more than the hose, which will cause it to be slightly different. I also ran my garden hose through the radiator and it appeared to flow well. Looking at the temp of the lower hose shows that it is cooling fine, but that doesn't prove that it's flowing fine.

Keep in mind, this is the 2nd radiator Ive tried and have the same issues, first one "seems" to flow fine with the garden hose as well.