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Hey--do you guys think I did any permanent damage by running it with a stuck thermostat? I only went about two miles, but it was making noises like and old boiler, and I know at least part of the block must have been dry and mighty hot and subject to some wild pressure surges when some coolant...

I just went back and read my first post--I guess the thermostat I had in it was a 180 deg. Why it worked on the first run but not the second or third is beyond me. What do people run mostly? 180 degrees? 195 degrees? Other??

Figured it out. The next day after work I made sure the radiator was full of antifreeze (I was able to add almost a whole gallon!) and I left the radiator cap off and started it up. Checked to make sure my timing hadn't slipped (it was spot on). Waited a little while and I could feel the...

Hello all. New crate motor--360 LA stroked to 408. Brand new four-row brass radiator. Yesterday was first run for me (had been on the Dyno successfully at the builder's shop). I put two gallons of distilled water and 1.5 gal antifreeze in the radiator immediately prior to starting. I have a...

Well, well, well. Guess what? I found out the reason for overheating. And it had nothing to do with my radiator cap, thermostat, water pump, or radiator. My motor was running waaayy lean! I had a small rubber cap blocking off a vacuum port at the base of my carb. It mustof been a real...

Apparently, my problems are not over! Replaced the radiator cap and put in a new thermostat. Flushed system and added coolant at 50/50. Took a 15-mile highway run and the gauge got to the 5/8 mark while cruising at 65-70. Cooled down to 1/4-3/8 when I got off the highway and was making my...

Hall County, myself. But up in Massachusetts since 1984. :wack: No, I am not worried about 1/3 gauge. Not at all! But I don't like it fluctuating. Maybe it was air bubbles. I think you were correct--it was a bad cap. Probably didn't need to do the thermostat, but it was only a half hour...

Hey RustyRatRod--where in Georgia are you?

OK--I put in a new radiator cap. Filled it up with plain water and took a drive. The motor warmed up and for the first ten minutes the temp gauge was right where it always is--at the 1/8-1/4 mark. Score! But then, at 15 minutes, the temp climbed up to the 3/8-1/2 point, and I said, "Here...

Yeah, the belt is good. It's fixed-fan type. I'm leaning towards ware pump ... could explain low heat in cold weather.

Ok, folks: 1971 Dart, 225 /6, non-A/C. Never had an overheating problem; in fact, in the wintertime I complain my heater doesn't blow hot enough air (new core, so no problem there...). Yesterday, on a 15 mile ride, I noticed after about 5 miles that my temperature gauge was up around 1/3-1/2...