SBJD HEAD March 21, 2010 01:09PM
Hello, looking to put a 55 series head on my 466 but have heard that some casting numbers are better than others for pulling. If so which casting is a better one to use. Also can anyone tell me if the head will need to be shaved to have correct compression ratio with 40series pistons, or will it not make much of a difference performance wise. Running in 3000 rpm hot farm class. Any info would be greatly appreciated.

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