At least I think it's a 216. Anyway, I got the truck in March and the weather was cool. The truck ran about 165-170. As the weather got warmer, so did the engine until it became a problem. Checked the thermostat which was okay but replaced it anyway. Flushed the cooling system then upgraded the original radiator with a higher performance radiator from US Radiator. The truck still wants to run about 190 and closer to 200 when it idles. Still has the original four blade fan, so maybe an upgrade there or an electric fan in front of the rad, I don't know. I don't want to treat a symptom and miss the problem. What do you guys think?
