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MattBMiller

12-05-2006 11:55 AM

454/330 Compression Ratio

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

Thanks!

Pat McPherson

12-05-2006 02:57 PM

Re: 454/330 Compression Ratio

About 8:1.

Fenderjack

12-05-2006 03:11 PM

Re: 454/330 Compression Ratio

I think 8.5-1 but it is for sure in the 8's.

Cam-shaft

12-05-2006 03:24 PM

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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