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Old Dec 9, 2008 | 01:55 PM
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Default 58cc heads

is a head w/a 58cc combustion chamber streetable? ive seen that w/ a 58cc combustion chamber and a stock head gaskit that you will have a campression ratio of over 11.5to1 . is this to high to run on pump gas, and will it be streetable?
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Old Dec 9, 2008 | 02:09 PM
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That's cutting it damn close for pump gas.. I wouldn't recommend it. gains aren't going to be worth it.
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Old Dec 9, 2008 | 02:23 PM
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It is streetable. I ran 58 cc heads with a stock head gasket on my 346, and am now running 58 cc heads with stock gaskets on my 383. I have around 11.8 static CR right now, and do not have any issues. What you need to watch is your DCR.
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Old Dec 9, 2008 | 02:31 PM
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And the dcr can be effected by the cam opening events corrcted? and is there a formula to determine this?
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Old Dec 9, 2008 | 06:35 PM
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^ Quite a few people have made calculators regarding DCR on here. If you search DCR calculator you should be able to find it.
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Old Dec 10, 2008 | 09:24 PM
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58cc here, with .040 cometics, daily driven in Florida. 93 octane.
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Old Dec 10, 2008 | 10:23 PM
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Depends on your DCR which depends on your camshaft.

Search for the Piano Prodigy DCR calculator.

Patrick G used 57cc with 0.041 head gasket.
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