Quote: Well im in bad shape. i put a 160 stat in and the car is still running at 210-215 on a short cruize. Its almost getting worse not better.
Switching from a 180 to a 160 will only make it worse. If your cooling system can't maintain 180 it's sure as hell not going to maintain 160. The thermostats just going to stay open and the hot water is just going to keep cycling through your block, never stopping in the radiator long enough to be cooled off. Put the 180 back in and move forward from there...
