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Jim in Boone wrote:
Maybe I'm remembering something incorrectly, but thought I remembered reading that the 288 head on a 327 block gave more compression? Maybe I have that backwards or totally wrong, but perhaps check engine number on your 288/327 before considering it a 288.
You are correct and there are Packard sanctioned head interchanges to raise compression ratios in various engine combinations.
https://packardinfo.com/xoops/html/downloads/SC/SC-VOL24NO7.pdf The article first appeared during the 22-23 series but is applicable for all 288/327 block based engines thru 54 except for the 359 engine. The 359 aluminum head is unique to the 54 engine. If it fails, unfortunately not all of the earlier cast iron heads can be swapped in. Only one or two will work without causing pinging issues that cannot be adjusted out.
In addition to the combinations listed in that article Packard also went to the trouble of making another head to raise compression in the 288 engine. It is listed in a later article.
https://packardinfo.com/xoops/html/downloads/SC/SC-VOL25NO4.pdf As was mentioned in another post, you cannot determine engine CID by a number that is cast on the head because the heads were often swapped -- both by an owners desire for more power or because an original head failed and a different one was readily available.
Unfortunately unless you happen upon a guaranteed NOS head still in factory wrappings there is no easy way tell the different heads by sight -- and that is assuming the head was never machined. IIRC, some years back Ross published some depth dimensions of the heads as determined by a micrometer. To the best of my knowledge part numbers were never hard stamped on the head and ID was by packaging or label or probably by a tag wired or bolted on via one of the holes in the head
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