Ok, update....and this gets interesting. I thought my issue was the fan clutch because it was not engaging like it should at 210*. I put a new one on last night, went for a drive, and the same issue happened....slow climb 235* before I got it home and no fan enagegment. Lemme back up to before I did that. I opened the rad cap before I started working on it and there was quite a bit of pressure and the top hose was pretty hard. Hmmmm, pressure? After cooling all night? That was my first indicator. Went for the test drive after the clutch change and same issue....getting hot and won't cool off. I pop the hood when I get to the house, and it is HOT on the engine side. I mean, it's hot here in Texas, but you could tell the engine was not getting cooled off at all. The top hose is hard as a rock and the fan clutch is not engaged like it should be. Call me crazy, but here is my theory. The ONLY thing I changed before all of this was the T-stat. I believe that is the culprit in this equation. It is not opening like it should and the water in the rad is staying fairly "cool" enough as to not get the clutch hot enough to fully engage. Since the t-stat is not opening, water doesn't circulate into a hot engine. This causes pressure (or back pressure) so the hose gets pressurized, radiator is too cool for the fan, and the engine overheats. Make sense? No coolant circulation would cause all of this. I am going to go back to the 180* since I have it to see if it will even keep it from overheating, not becaue I think a cooler t-stat will keep it cool, but because hopefully it will simply work at all. I don't think the AC Delco is opening. I had this same issue on my '94 I had years ago. I put a new t-stat in when I flushed coolant. First test drive, overheated and system pressuirzed. Pulled t-stat and drove it home....no issue. Ah! Put old T-stat back in and it was fine. Hopefully that is the deal this time as well. I will report back.