402 compression question

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Nov 26, 2008 | 09:52 PM

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TECH Apprentice

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From: milton florida

402 compression question

ok i bought my 402 from a guy that had it built by HKE and he lost the build sheet, but the ross pistons that are in there are like -8cc pistons. what would my compression ratio be ruffly with a 64cc head..if i need to measure anything else let me know and i will

Nov 26, 2008 | 10:16 PM

LLC

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Not enough information.

Zero deck? Out by .005 or more?...........in by .010? Need to know the deck.

What thickness head gasket is being used?

"roughly"

Nov 26, 2008 | 10:29 PM

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TECH Apprentice

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From: milton florida

MLS i believe .051 i beleive on the head gasket. deck i believe is zero..id have to measure it ..

Nov 26, 2008 | 10:55 PM

carzmed

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From: TX

http://www.c5frc.com/calculators/Com...Calculator.htm

Try to keep quench at .040 or .045

Nov 26, 2008 | 11:17 PM

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From: milton florida

thanks bro, that helped a lot..

Nov 27, 2008 | 10:45 AM

DrkPhx

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From: St. Michael, MN.

I like this calculator because it takes in consideration either a positive or negative deck height.

http://www.rbracing-rsr.com/compstaticcalc.html

BTW - HKE should still have the build sheet on file if it was a recent build. I would call HKE with the previous owners name and approximate purchase date to get the specs.

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