Quote:

Even with the dashboard temperature lever all the way to the left, the heater hoses on both sides of the heater control valve (located next to the right side valve cover)feel like the same temperature after the 318 motor reaches operating temperature.

Shouldn't one side be cold...or at least cooler than the other side?

It looks like 1985 factory original equipment.....everything else on this truck was.





Are you getting heat out of some part of your venting inside the truck with the temp. lever all the way to the left? I had that problem too. My problem was the cable came off the lever tang. But when I put it back on the cable bent. The heater valve on the pass. fender was gummed up and hard to move. I took it off, bead blasted it, and WD-40'd it. Works great now. Also found a new cable.
I'm wondering what year truck you have? Mine's a '76, 360 with A/C. The valves are different with/without A/C.
Mine.


Also, get one of these for the valve. Works better than the rolled metal one.