Re: Milling the head
When milling the model B or C heads a person needs to be careful not to get carried away .The B and C heads have a concave area on the valve side of the head . If too much material is removed you will enter the concave area and the head won't completely cover the head gasket on the valve side of the engine. If the gasket is exposed to the combustion chamber the gasket will fail quicker on the exposed area . After milling , lay the gasket on the head to see how much of the gasket will be exposed . The engine will still run if part of the gasket is exposed to the heat of the combustion chamber but probably not as long as it would otherwise . I wouldn't have a B or C head milled any more than is necessary to level the head . It would be a shame to ruin A police head with the large letter B . Take a look at the recessed area on the valve side of these heads and you can see what I mean . The recessed area on these heads was Fords attempt to prevent valve shrouding on the manifold side .
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