Marty, If you d the math the 600cfm is nearly a perfect match for a 401... You should not lose anything, except the car should run a whole lot better with the smaller carb. It does no good to over carb a car as all it does is to lean out the air/fuel mixture when you don't have the flow to pull the correct amount of gas out of the jets for the size of the carb... Peter -----Original Message----- From: amc-list-bounces@xxxxxxx [mailto:amc-list-bounces@xxxxxxx]On Behalf Of Marty Bricker Sent: Saturday, July 15, 2006 7:44 PM To: northtexasamc@xxxxxxxxxxxxxxx; AMC List Subject: [AMC-List] Update on surging 401 Well, it appears that the problem was with the 750 Carter . I swapped it out with my 600 Edelbrock and it's running just great. I purchased the 750 cause I was told the 600 would not be enough for the 401. Where will I see a difference? It seemed to pull great off the line up to 70-80 when I backed off. I don't have any experience with an engine like this (304 was biggest I ever had before). Thanks. Marty __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list or go to http://www.amc-list.com _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list or go to http://www.amc-list.com