Re: Aluminum Head?

Posted by JWL On 2021/4/30 12:43:37

I have noted earlier that the aftermarket aluminum heads have their spark plug location located more centrally in the combustion chamber than the Packard heads. Packard placed the spark plug over the exhaust valve. These two photos showing the aftermarket and Packard heads are the clearest examples of this I have seen. I wonder why the difference?

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