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Keep your RPM's below 2500 and do not use cruise control in mouthains.
quote=drifterpilot]I ran again today for 350 miles along Rte 87 and Rte 40 west toward Little Rock. I am stopped for the night in Nashville. I drove all day with the front facing engine compt door wide open for max air flow into the engine compt. With the early morning outside temps in the 55 - 67 deg range, the engine did not rise in temp. However, after that, I had to run the dash heat at max with blower on full to pull heat from the engine to maintain engine temp close to normal. At times, the engine temp would rise and climb and I would have to slow my speed to lower engine rpm's to help control the engine temp. After 2:00 pm today, I ran into outside temps that were 93 deg on rte 40. Definitely uncomfortable driving.
Appreciate all the good info / comments.
I will definitely look into the AC/Delco water pump replacement. That sounds like a very serious consideration. I hope I can find one in the Little Rock area because leaving there on the 8th, I have to drive to Charleston SC.
Thanks again.