273 Overheating problem

Well, I've been swamped at work, so there goes any hope of fixing this before the weekend. However, I appreciate your responses - I'll certainly check the thermostat this weekend, just to make sure. I'm hoping that the water pump isn't suffering - after paying for an engine rebuild, I'd like to keep the engine expenses down for a while (wouldn't we all?).

Sanguine, you have a good point - I hadn't thought about how much of an effect thinner side walls and the higher compression would have.

As for an exact temp. number, I couldn't tell you - '67 gauges don't tell me much, just that it's above "Normal," or whatever term you give to the middle line on a temp. gauge.

66dartgt, the car was originally an A/C car, but I've removed the A/C unit. However, if there were two different size water pumps (as I understand you to be saying) then I still have the A/C-size water pump attached, directly to the fan. Is this what you are talking about?