Upon further reflection, I suspect all the '63 360 horse 413s were stamped HP, like the K/L, but actual owners should validate. The high compression options, if any actually installed in other than Dodge/Plymouth, should be stamped HC I believe. Tell your engine happy birthday; 48 years young today! Carl _____ From: C Bilter [mailto:cbilter@xxxxxxxxx] Sent: Monday, November 08, 2010 8:34 PM To: 'JettLarry@xxxxxxx'; 'chrysler300@xxxxxxxxxxxxxxx' Subject: RE: [Chrysler300] Engine stamping detectives.... High Performance!! Should also have T-41 for a '63 413. Supposedly, there was a 365 horse 413 with 11:1 compression available for the '63 300 non-letter. Could it be??? Or were all the optional 360 horse 413s stamped HP? Carl Bilter 300J _____ From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of JettLarry@xxxxxxx Sent: Monday, November 08, 2010 7:38 PM To: chrysler300@xxxxxxxxxxxxxxx Subject: [Chrysler300] Engine stamping detectives.... A double helping of Laguna Seca Sidecars (the official meet beverage) to somebody unlocking the key to 300J Wannabe's engine boss stamping. The 11-8 is clearly the day of build for a car to be produced on 11-23 but what does HP mean? No engine displacement code, just 11-8 and HP. Hello Galen? are you out there? [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylangYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/