In this last post of the heater box restoration on my Chevy C-10 truck, as we promised is going to be superb! The final step is adding the flat black engine paint rated at *500 degrees to give this box that perfect factory look!
Make sure you shake your can vigorously so the marble inside has mixed the paint well. And you will know this when the marble gets louder. While applying the paint to the heater box I keep 6 to 8 inches away while doing quick on and off sprays with a right to left-back and forth motions while applying a light even coat. And this will give you fewer chances of the paint running. And DON’T be in a hurry to do these last steps.
Now, when I first painted this heater box, I did the inner area of the box where my heater core is supposed to be sitting. After that, I would let it sit and dry 30 to 45 minutes between each application of paint. But I also had a big cardboard box I would sit it in while drying if it was a windy day to protect it from dust. (Between each curing step)
Now onto the outside of my box with the flat black paint. First I would use masking tape on the mounting studs for this box to the firewall. If I don’t do this step, I will be forced to chase the threads to remove any paint in the threads before mounting this box. Now I can put my heater box on its top and paint the outside of this beauty.
After the first even coat, I would apply 2 more even coats to the outside of this heater box. Hoping to give it that nice factory look. Then, after all, that is said and done, I would let it sit a few hours and give it a quick look over to look for any missed places or imperfections, and then I would finally give it 3 coats of engine high-temperature clear coat. 
Now with each coat do about the same time as previous applications and next, I have to replace the blower motor but instead of paying the high price for a new one, that isn’t made of U.S. soil, I found a stock one at a local salvage yard and this one has the makings of being original to the truck I took it off of. It also had the “just right” play and feel to it, that it felt like a new motor. But I couldn’t test it in the yard till after I purchased it. And the purchase price made me smile ear to ear because it was only $6.50!!!!! Then I went out and tested the motor before I left the lot and it purred like a kitten!!!!!!
So this was a great find! I get it home and strip off the old paint. I masked off my fan and primed it in 2 coats and 2 coats of flat black and sealed it with some clear coat and VOILA! I have a heater motor.
Taped off plug connection here again from paint.
