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Old 04-04-2012, 06:59 PM
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BOBCRMAN@aol.com BOBCRMAN@aol.com is offline
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CC- Closed chamber heads, have a tight bathtub style combustion chamber. OC- Open chamber, have the chamber spark plug side laid over like half of a hemisphere. Makes for better emission and also breathes better. Better flame travel. 65-70 oval port heads CC. 71 and later, most are OC.
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