Dual quad info
I worked on a 409 factory dual quad set up recently and it had progressive linkage. Secondary front carb had no mixture screws. The intake is set up so that 1 barrel of the primary choked rear carb feeds 4 cylinders and the other primary feeds the other 4 cylinders. IMHO
your intake design determines what style linkage you should run. A tunnel ram probably shouldn't run progressive linkage. I run 1 to 1 on my TR 440.
I worked on a 409 factory dual quad set up recently and it had progressive linkage. Secondary front carb had no mixture screws. The intake is set up so that 1 barrel of the primary choked rear carb feeds 4 cylinders and the other primary feeds the other 4 cylinders. IMHO
your intake design determines what style linkage you should run. A tunnel ram probably shouldn't run progressive linkage. I run 1 to 1 on my TR 440.