In a message dated 6/19/2002 3:00:44 AM Pacific Daylight Time, Chrysler300@xxxxxxxxxxxxxxx writes: << From: "David Agnew" <Fnnutz@xxxx> Subject: 2903S cfm Group, Anyone know what the cfm of one of these carbs is, please? Can't find it anywhere. >> According to Dave Emanuel's book, "Super Tuning and Modifying Carter Carburetors", other Carter AFB's with identical primary and secondary bores as the 2903S (1-7/16" & 1-11/16") and identical venturi diameters as the 2903S (1-3/16" & 1-9/16") are rated by Carter as 625 CFM carbs. I'd reckon the 2903 is also 625 CFM. 300F'ly, Roger Karlson