I coated mine with POR 15 manifold paint before installing them. Three years and a few thousand miles later and they still look new. Can't speak to hot start issues since the RobbMc starter cranks it right around no matter what.
I am really impressed at how well the POR 15 has worked. Next time I have the engine out I may wire brush the exhaust ports on the heads and try putting a coat of the stuff on them before touching up the blue engine paint.
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1969 Lemans vert, matador red, 462 CI, 3.07 12-bolt posi
1974 455 TA, admiralty blue/red interior HPP "cover car" - sold
"The best way to show a car is to drive it"
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