Just bought a 84 K20 has a plow on it was driving home got warmed up then started to over heat 225 plus. Pulled over temp slow goes down. Limped it home, changed thermostat to 180. It idles fine around 190 then as soon as you drive over 30 heats up pull over goes down to 190. Truck has no fan...
I just bought a 1984 K20 it has a 350 with automatic was a manual trans a one point. I’ve been doing so research but can’t find what I’m looking for. Trying to figure out what transfer case I have it appears to be cast iron. The lever back toward seat is 4hi then neutral then 4lo. It has lock...