Re: Open Chamber Heads on 69 L89 Corvettes?
Jason -- that is what many call them ... but they are not like the 68' and older heads. The true "bath tub" shape of the chamber was changed on the 69' 063 heads. They are opened up on the spark plug side much like the newer open chambers but still use the large plugs. I have a set of these heads on a 440ci chevy with .180 closed chamber pop-ups. Compression comes in at approx 10.25:1.
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03-14-2013, 11:43 PM
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