I will check the rating on those, but I am pretty sure that the cfm rating on the carter webers is around 230 cfm, and the holley webers are around 270-290 rated at 3mmhg preasure each, and that the carters are only marginally smaller, can anyone substantiate this for me? I hope they are not 100CFM as I already bought two, wouldnt 100CFM be smaller than 1 barrel carbs????