My only question would be about the pistons being slightly out of the hole. Would a factory motor not more than likely be down in the hole?
My point being that a factory motor would be even worse than advertised on compression.
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1967 Firebird 462 580hp/590ftlbs
1962 Pontiac Catalina Safari Swapped in Turd of an Olds 455
Owner/Creator Catfish Motorsports
https://www.youtube.com/@CatfishMotorsports
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