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Old 03-06-2026, 02:45 PM
LM93 LM93 is offline
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Join Date: Mar 2021
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"670 heads usually demand a premium. They are also closed chamber. I would rather use high compression heads that are open chamber, which started (I think) with 061 heads from 1967, and other heads from 68-70."


Do the closed chambers's valve location not work well with the smaller bores? https://forums.maxperformanceinc.com...7&d=1610800822

I've read conflicting forum posts about detonation, are closed chambers more detonation prone or are they just usually high comp chambers to begin with?

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