Yup. I missed it. There is a lot to absorb in this thread. Not sure how I missed that. But then again in Shurkeys defense he also says (if you read further): Simon, You know you are twisting around what I said about torque! You are confusing what I said "MORE torqe" for "LOW END torque" The object is to not only increase the torque, but do so over a longer RPM range- Not JUST the low end torque the nailhead is famous for. Lets see the same numbers attained with a single 4bbl manifold! You cant use Teds comparison as a good example as he explained why. And you cant take say an awful-hauser 2x4 and compare it to a single 4 either. Now admittedly there are modifications that can be done to a single 4 to make some improvements. I dont think I need to restate the Stock torque and horspower ratings are for dual quads. Besides that is what is correct for my Super Wildcat motor. Since we are talking about runner length, there is also an argument to be made for non-progressive linkage (and a difference in performance)- two carbs running together in perfect synchonicity just the same as you would a single carb, only more CFM feeding each cyllinder more directly and evenly. To illustrate further: If longer runners are supposed to typicaly increase torque, why do intake spacers hurt performance on a nailhead?