maybe you need more insulation on the firewall - is the truck actually overheating? - what does the temp gauge say? have you checked the actual temp with a good laser thermometer?

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics