Joe: Thanks for your input. Can you recall any other details of what defined the rating point? Critical flow? Maximum allowable pressure drop? Some optimum? With or without air cleaners? My sly drool indicates 500 cfm is equivalent to 2,295 lbs/hour at sea level, 60 degrees. At a 15:1 air-fuel ratio, fuel use would be 164 pounds/hour or about 28 gallons/hour of gasoline. If your 300 was doing 130 mph, that would be 4.6 mpg at WOT. Probably a reasonable number for a racing 300. C-300'ly, Rich Barber 1955 C-300 -----Original Message----- From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of jlsavard@xxxxxxx Sent: Tuesday, June 05, 2007 1:40 PM To: paulholm@xxxxxxxxxxxxx; c300@xxxxxxx Cc: saduggan@xxxxxxxxxxxxx; chrysler300@xxxxxxxxxxxxxxx Subject: Re: [Chrysler300] AFB Carbs In a message dated 6/5/2007 2:22:58 P.M. Eastern Daylight Time, paulholm@xxxxxxxxxxxxx writes: YES, I was lead to believe that the original methods of rating them was Different, at least by the Chrysler labs, More like Pounds per rather then cubic feet As I recall from my many months of sitting at a Chrysler flow stand, we used "Pounds Per Hour" of airflow in our calculations. Joe Savard Lake Orion, Michigan ************************************** See what's free at http://www.aol.com. [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 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/