compression ratio for 70 429

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12-22-2001, 11:20 AM

schweg2

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compression ratio for 70 429

I have 13cc dished Sealed Power pistons (part#413np) with 75.8cc
combustion chambers and need to know what the compression ratio would be. The motor is a 1970 429. Thanks for any info!

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12-22-2001, 11:37 AM

Ford79

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compression ratio for 70 429

Should be somewhere around 9.5:1 to 9.8:1.

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12-24-2001, 12:50 PM

schweg2

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compression ratio for 70 429

[updated:LAST EDITED ON 24-Dec-01 AT 01:52 PM (EST)]>I have 13cc dished Sealed Power pistons (part#413np) with
>75.8cc
>combustion chambers and need to know what the compression
>ratio would be. The motor is a 1970 429. Thanks for any
>info!

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12-24-2001, 12:53 PM

schweg2

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compression ratio for 70 429

Does anybody else have any ideas?

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12-28-2001, 08:59 AM

dmoc1

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compression ratio for 70 429

There is a lot of discussion on the compression ratio in the forum. If you do a search you can pick them up. Also, several websites have compression ratio calculators. Just do a search using those as key words. Some include deck height and gasket thickness, others are simple. Here is one.

http://www.musclecars.net/KnowledgeBase/MotorMath/compression.html

Hope it helps.

Dennis
55F100 w/429:-X12

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