Glad your fixed. The vibration sure sounds like U-Joint(s). Now the gas miliage If you get 12 mpg at 75 you had better leave the carburators alone. I might even trade you mine. 10.8 mpg at 75. Gary Barker tdcox wrote: >Thanks to Gary, John, John and all. It seems that a carb adjustment has >worked miracles with respect to the backfiring and rough running at low >speeds. All the irritating things that happened on my trip to Pigeon Forge >are gone. > >I failed to tell you all that I have the electronic ignition replacement for >points/condensor, so that wasn't the issue, as many suspected. Sorry. I >plan to have the carbs rebuilt over the Winter so that may resolve any other >fuel issues. > >I am still only getting about 12 mpg on the highway at 75 mph, so I figure >it may just be rebuild time. > >The only other issue I have is an intermittant vibration which a friend here >thinks is a transmission mount problem. Don Verity rebuilt the transmission >and it is great. Shifts crisply and seems to be just fine. Usually, the >vibration is when I first take off when everything is cold and occasionally >other times. It is a rapid vibration and not too severe, but noticeable. I >have new/rebuilt everything in terms of rear end, universal joints, springs, >shocks. Any suggestions? > >Thanks again for all your help. > >Tom > > > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/8LmulB/TM --------------------------------------------------------------------~-> 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 Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> 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/