Re: Cylinder heads
You'll notice on BEST gaskets that the head gaskets have a 'notch' cut out to denote which way the gasket should be installed (notch to the front).
They deliberately restrict the water in the front of the deck/block and have bigger holes in the rear. This is to get more water flow and cooling to the rear of the block (which always runs hotter).
In 1949 to 1953 engines, they obviously made major mods to the deck surfaces, heads and gaskets - to drive more water to the rear - for the same reason.
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