Thread: "427 engine sound you can feel"
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Old 05-07-2003, 10:52 AM
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bmalone bmalone is offline
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I run 9.6:1 in my 427 and I think you will find many owners are in that same range or just a tad higher--a far cry from the 11.x:1 from the factory.

Mine still sounds good--even at idle.
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