Re: Compression ratio of 327 head; year of the engine block?

Posted by flyntgr On 2017/3/13 5:31:02

Thank you for your reply. This engine purrs like a kitty, smooth as can be, so I will just presume it's a 1954 327 head, which gives it almost exactly the same compression ratio as the aluminum head would give me on this engine. The difference, according to the charts on this site, is negligible-which explains why this engine runs so well. All things considered, I am quite confident that the head swap was done back in the day when Packard mechanics were still around in more abundance than today.