[rphubbard]

I have the intake manifold coated on the inside and out on my blower motor. The manifold runs very cool. This engine is in my truck that I use for towing. I also had the pistons ceramic coated and the skirts of the pistons coated with a dry lubricant. I have never had a detonation problem even when I accidently put mid grade in my tank. I had all my ceramic coating done by HPC in Salt Lake City. I changed my cylinder heads at 15000 miles and the tops of my pistons still looked like they just had been coated. If I would do it again I would get my valves coated and maybe the combustion chambers. When I worked at Kirkham Motorsports we did that to a 427 and it ran very cool.