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Am I to believe Chilton's horsepower ratings?

1043 Views 3 Replies 4 Participants Last post by  Mojo
I have recently purchased a 67 with a 327.
According to my old 73 Chiltons the hp for my
particular 327 is listed as 325. Was GM
really getting that much out of them stock,
and if so how were they doing it (besides
the high compression ratio Chilton lists)?
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