need smaller carbs...

[Rolling_Thunder]

Well guys here's the thing...   I am looking for ~400cfm 4bbl carbs...    seems no one makes these things new - smallest i can find is 500cfm...   I am looking at a dual quad set up for a 318 and am wondering if there is any way to cut down on the cfm rating of a carb...   I can just get two 500cfm carbs and try to cut about 150-200cfm out of the system some how (if its possible) - or i am stuck looking for the mythical Carter 9400 carbs....      The only alternative is to just do my original plan of mounting dual 400cfm TBI 2bbl units...   

so my question is ---> is it possible to cut down airflow through a carb with accurate results ?

[Rolling_Thunder]

I'm going to smack every one of you guys....       I know a lot but I'll be the first to admit i know very little about carbs other than the basics

[BigBlackDodge]

How about a pair of 390's?

http://www.speedwaymotors.com/Holley-390-CFM-Four-Barrel-Street-Performance-Carburetor,367.html

BBD