With the truck running at a high idle take a piece of newspaper and see if it sucks to the front of the radiator. If it does your fan is on right. Take the radiator cap off and run it up to temp and see if the water boils out or the level drops. Do this with your heater on if you have one. Top up the coolant to the proper level and put the cap back on. If the above doesn't fix it try checking the timing. Post back and let us know. More will chime in I'm sure.
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
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