I think you’ll still see temps. that are high enough to blister the paint. What was recommended to me years ago by a noted Pontiac restorer was to not apply the engine paint to those areas you know are going to burn off. Instead, paint in those areas with Eastwood cast iron look high temp paint. This still looks like the paint has burned off but will be rust resistant and not show the gold tone of the burnt engine paint. Easily touched up with a brush if needed. This also works on the intake crossover if you don’t run that blocked off.
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