Robert it made no difference backing the timing to 5 degrees, and will put it back to 15. Spark plugs looked great too, so mixture is about right.

What happened last nite the gage showed 240 idling but I was able to put my hand on valve cover, I know the gasket can reduce the temp. But the IR temp gun showed heads at 200, water pump was 180, rad top tank was 200, upper hose was 165, lower was 135. So I am not convinced yet I have a heat issue.

I am starting to suspect the temp sender, and have another new one to swap in to see if any change.

Mike


2008 Challenger SRT8
1940 Chrysler Royal coupe