The modification calls for drilling out the pilot jet holes and drilling breather holes in the air horn. That appears to be the thing that affects the idling. George _____ From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of jlsavard@xxxxxxx Sent: Monday, December 15, 2008 09:26 AM To: vhelbling@xxxxxxxxxxxxxxx; Chrysler300@xxxxxxxxxxxxxxx Subject: Re: [Chrysler300] 300 c carburetor modifactions In a message dated 12/15/2008 10:57:55 A.M. Eastern Standard Time, vhelbling@tampabay. <mailto:vhelbling%40tampabay.rr.com> rr.com writes: I would like to try the modifications described in the Chrysler TECHNICAL BULLETIN #364 (or 384) dated 7/18/57. The change involves installing (4) metering rods #75-1160. Does anyone know a source? Or can anyone tell me the diameter of the rod at high speed (small diameter) and low speed (large diameter). Is there a cross reference chart available that shows chrysler numbers vs carter numbers on the metering rods. Does anyone have any info how this change worked in their car, especially regarding idle? Changes in the metering rod sizes will have NO EFFECT on the idle circuit. These parts affect only road-load and wide-open-throttle mixtures. What kind of idle problems are you having? Joe Savard Lake Orion, Michigan **************Make your life easier with all your friends, email, and favorite sites in one place. Try it now. (http://www.aol. <http://www.aol.com/?optin=new-dp&icid=aolcom40vanity&ncid=emlcntaolcom00000 010> com/?optin=new-dp&icid=aolcom40vanity&ncid=emlcntaolcom00000010) [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 For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! 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: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto: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/