Packard8 Posted October 1, 2009 Share Posted October 1, 2009 Hi Folks,I am trying to identify the application and compression ratio of a straight 8 cylinder head P/N 455139. It is not listed in my 1951-54 parts catalog nor does it have any ID (such as 288, 327, AT, STD etc) cast into the head, any ideas? Thanks Link to comment Share on other sites More sharing options...
Guest John_Lawrence Posted October 5, 2009 Share Posted October 5, 2009 Packard8, there is a specification table for the 1935-54 monoblock 8-cylinder engines in the September issue of the Packard Club's Cormorant News Bulletin. The table is also available on the packardinfo.com site. For the 1951-54 engines, only 1952s had standard and high compression cylinder heads listed. All the other years show only standard compression ratio heads. Link to comment Share on other sites More sharing options...
Packard8 Posted October 5, 2009 Author Share Posted October 5, 2009 Thanks John, I'll check out that article. There are dozens of heads listed in the 1948-54 parts list with the model application and C/R, (even a few oddballs for export use) but not the one I mentioned. If necessary, I will cc the volume and compare it to others I have with a known C/R. Link to comment Share on other sites More sharing options...
Guest John_Lawrence Posted October 5, 2009 Share Posted October 5, 2009 Packard8, I should have said that in 1951-54 period, only 1952 had high and standard compression ration cylinder heads listed. Link to comment Share on other sites More sharing options...
Packard8 Posted October 11, 2009 Author Share Posted October 11, 2009 Packard8, I should have said that in 1951-54 period, only 1952 had high and standard compression ration cylinder heads listed.Hi John,I looked on the packardinfo.com site and did not find the table you mentioned. Could you possibly post a link?thanks Link to comment Share on other sites More sharing options...
Packard8 Posted October 11, 2009 Author Share Posted October 11, 2009 Hi John,I looked on the packardinfo.com site and did not find the table you mentioned. Could you possibly post a link?thanksJohn...I looked again and found the specs.Thanks for the info! Link to comment Share on other sites More sharing options...
Joe Block Posted October 18, 2009 Share Posted October 18, 2009 here the chart link Link to comment Share on other sites More sharing options...
Joe Block Posted October 18, 2009 Share Posted October 18, 2009 (edited) there some more information year engine Comp Ratio volume 1948 -51 288 7 41.14 late 52 7.5 38.40 53 7.7 37.40 stock 356 7 50.86 1948-51 8.7 41.14 late 52 9.3 38.40 53 9.5 37.40sorry about the lost formatting. Edited October 18, 2009 by packards42 (see edit history) Link to comment Share on other sites More sharing options...
Packard8 Posted October 19, 2009 Author Share Posted October 19, 2009 there some more information year engine Comp Ratio volume 1948 -51 288 7 41.14 late 52 7.5 38.40 53 7.7 37.40 stock 356 7 50.86 1948-51 8.7 41.14 late 52 9.3 38.40 53 9.5 37.40sorry about the lost formatting.Thanks for the info, looks like I'll need to cc the mystery head and compare it to other known ones I can measure. Link to comment Share on other sites More sharing options...
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