thanks for all the great input . i think you are all right in some ways. the radiator hasn't been redone . it is the original for the truck . probably is some restriction there,and maybe the motor ,too . the hoses are new but this radiator has a one and one quarter inch upper inlet. i won't be driving it much and it seems to run just fine since i have now gone back to no thermostat. in the future will do the radiator when i use it for a daily driver . overflow tank is in the future ,too , though it seems that it only goes into the tank never back in the motor...you know what i mean!
