Could this idea work ? Did other guys did this ? 318 infos

A bunch of cool "theory" that in the real world, is a waste of time. Consider that your larger 2 barrel, will decrease low speed velocity through the carburetor, compared to the stock 2 barrel, where as a small 4 barrel will have smaller primary's, for better low end response, and the secondarys provide the additional air flow for the upper rpms. The reason OEMS typically used 2 barrel carbs was strictly cost.