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Thread: 327 with aluminum heads

  1. #1
    Junior Member SHOW GUEST
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    327 with aluminum heads

    wondering what a 327 with flat top pistons an 57cc aluminum head with 194 valves heads are 86 corvette heads L98 what the compression ratio would be an what would be a good head gasket to use thanks rw

  2. #2
    Junior Member APPRENTICE
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    CR will be around 9.8:1 with 0.04" head gasket.

  3. #3
    Junior Member APPRENTICE
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    http://www.wallaceracing.com/cr_test2.php

    This calculator is worthless! Dont use it

  4. #4

    compression ratio

    Just looking at the numbers, I think you are both a litttle off. Looks to be more like 10 to 10.5-1. Here is another calculator. To be accurate you have to know the CC's of the reliefs and the Deck height. .040" is a good assumption for the gasket you should be using (standard permatorque).


    Dan

    http://www.wheelspin.net/calc/calc2.html

  5. #5
    Junior Member APPRENTICE
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    http://store.summitracing.com/partde...2&autoview=sku

    http://www.amazon.com/Permatex-80697.../dp/B000HBNUDQ

    With that set you can have piece of mind that youl never have to deal with a blown head gasket.

    CR with above gasket is 13.31:1 with one calculator and 11:1 with the other now when I check both calculators to a factory 8.5:1 motor the calculator I posted is wrong and should be hacked off the internet.

    According to the wheelspin.net calc you would be @ 11:1 with the above gasket set.

  6. #6
    Senior Member RACING JUNKIE jmarksdragster's Avatar
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    Fel Pro 1003.
    Mark Whitener
    http://racingfuelsystems.myfunforum.org
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