[Steeveedee]

It's usually air flow at idle that causes heating, though. You can check the clutch by watching what happens when you turn the engine off. If it coasts for a bit, it's toast. It should stop rotating almost immediately when you shut the engine off.

I found a high flow thermostat at NAPA. The valve is much bigger than the one in the standard thermostat. It doesn't have a hole drilled any where. Check it out.