I looked up the rated flows for the YF and the BBD carbs on an offroad Jeep site the just the other day to answer a question for a newby on the AMC forum. As I recall a YF flows about 178 cfm and a BBD is rated at 275 to 285 cfm. Those numbers could be a little off, but they are in the ball park I believe. Joe Fulton Salinas, CA _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list or go to http://www.amc-list.com