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Old 04-02-2007, 07:49 PM
crider crider is offline
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Default 455 questions
I have a 455 with block code YX. It has 4x heads on it but I can't find anything stamped on the little pads for the other code. assumng they are the originals which 4x would they be? What size chamber? what compression ratio on a stock 455? thanks for any help on this

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