Thread: Pontiacs
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Old 09-07-2021, 05:06 PM   #61
Billy Nees
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Default Re: Pontiacs
Quote:
Originally Posted by oldskool View Post
" Advantage of those '77-'78 400's is the common 6X head.
THAT isn't the only advantage of the 6X head on the 400.....They have a very (very very) benevolent combustion chamber spec. ;-)
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