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wtb: 1964-1966 buick 425 block


cobravii

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8 minutes ago, cobravii said:

externally 401 and 425 blocks are the same however a 401 cannot be bored to a 425. Some have said that an uncles's brothers aunt once bored a 401 to a 425 but I don't believe them. so, that been said, a 425 block is cast differently.

Thanks for the info ! I'm sure there are other Buick guys surprised to hear this !!

Bill

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