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What is the compression ratio on a 454 Chevy?

Updated: 9/17/2023

Wiki User

∙ 14y ago

Best Answer

8.25 to 1 From 1977 and down. 1978 and up is 8.0 to 1 But it would really help if I new the year. There is a few other ones that are different, But just VERY LITTLE.

Wiki User

∙ 14y ago

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