Mopar CFM Ratings for Carburetors

bigtom said
What about the one year only Rochester 2GV on my 71 318 Dart?

Big Tom,

How can that be ?

Rochester #2GC Specifications

Rating_______Throttle Plate x Venturi

* 278 CFM ............. 1.437" x 1.093"
* 352 CFM ............. 1.686" x 1.186"
* 381 CFM ............. 1.686" x 1.250"
* 423 CFM.............. 1.686" x 1.312"
* 435 CFM ............. 1.686" x 1.375"