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454/330 Compression Ratio

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Old 12-05-2006 | 11:55 AM
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Default 454/330 Compression Ratio

What is the compression ratio on a stock carbed Merc Gen V 454/330?

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Old 12-05-2006 | 02:57 PM
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Default Re: 454/330 Compression Ratio

About 8:1.
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Old 12-05-2006 | 03:11 PM
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Default Re: 454/330 Compression Ratio

I think 8.5-1 but it is for sure in the 8's.
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Old 12-05-2006 | 03:24 PM
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Default Re: 454/330 Compression Ratio

330hp also known as 7.4l cr is 8.0:1
454mag is 8.6:1
502 mag is 8.75:1

Thanks Cam-shaft.
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