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Forum: Pontiac - Race 11-28-2022, 01:45 AM
Replies: 8
Views: 1,266
Posted By Zooguy
66 389 LOW COMPRESSION

Have a 1966 Pontiac 389 and from doing some research looks like the compression ratio is something like 10.5 and I was wondering what cylinder heads I should be looking out for to give me the lowest...
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