So heres the update. Put the Ac Delco in that I got from Leroy n tried the truck and it ran at about 190 to 200 on good roads and interstate but overheated goin up Walker mtn to 220 with the heater blasting. So I had talked to Turbine Doc, Tim, n he said my truck should have the stat from Gm dealership with the black plastic collar so I put it in, the $42 one, same result but it would drop the temp a little faster after climbing the mtn n starting down. So I unhooked the horse trailer n took off testing it out and no problem, ran below 200 with ac on on hills and interstate! On climbing Walker mtn if I turned the ac off it would climb at slightly less than 210. Also had a lot more speed and acceleration, she struggled some with the trailer n was really slow on long grades and mountains but did great without the trailer. Here is what I think happened, at 14060 lbs she had a world of power to pull but couldnt handle the heat so I overheated on Fancy Gap from too much weight n a bad fan clutch and that ruined the tstat. With a new stat n hd clutch I coul do allright n the flatland but no way in the mtns. If I had a 98 fan clutch and fan I probably could do it but the truck handled the camper so much better without the trailer that I am gonna do what Pepp suggested n reload the camper with all the oil n camping gear from the trailer n take off. Have to installt the inverter etc in the camper today n leave Mon morn for Franklin Nc and the rubyy mines! If anyone has a 98 fan for sale let me know I am going to do as WarWagon suggested n switch out on The Trip.