Don My car was built 2 days before yours - without air conditioning. It has the six blade fan like yours but with a silent drive. It makes sense that your air conditioned car would have a direct drive to increase air flow at idle. A five blade fan with varying blade spacings reduces the chance of resonating fan belts and may have been a later innovation. The blade pitch or size may be greater to keep the air flow the same. Regards Henry Schleimer From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Don Verity Sent: Wednesday, 10 July 2013 2:52 AM To: Gary Nelson; retromobilia@xxxxxxxxxxx Cc: Rob Kern; Ray Melton; chrysler300@xxxxxxxxxxxxxxx Subject: Re: [Chrysler300] Need parts for 1957 Chrysler 300C Mine has a build date of 6/4/57. That would seem to follow the “whatever they had” theory. Don From: retromobilia@xxxxxxxxxxx <mailto:retromobilia%40comcast.net> Sent: Tuesday, July 09, 2013 11:38 AM To: Gary Nelson Cc: Don Verity ; Rob Kern ; Ray Melton ; chrysler300@xxxxxxxxxxxxxxx <mailto:chrysler300%40yahoogroups.com> Subject: Re: [Chrysler300] Need parts for 1957 Chrysler 300C Perhaps, changes were made (or upgrades as they became available) during the production year. It may be important when siting these examples, on various cars, to include the production number and /or date of manufacture. Seems to me this would clear up a lot of guesswork. Comments!? John ----- Original Message ----- From: "Gary Nelson" <mailto:gnelson%40glnelson.com> To: "Don Verity" <mailto:d.verity%40cox.net>, "Rob Kern" <mailto:robkern%40sbcglobal.net>, "Ray Melton" <mailto:rfmelton%40msn.com>, mailto:chrysler300%40yahoogroups.com, "Gary Nelson" <mailto:gnelson%40glnelson.com> Sent: Tuesday, July 9, 2013 8:11:50 AM Subject: RE: [Chrysler300] Need parts for 1957 Chrysler 300C This confirms when a 300 came down the production line, if the correct part was not at hand, it received what was at hand. Gary [Non-text portions of this message have been removed] [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/