Dominators usually have 1:1 linkage on the throttle shafts but you can get a progressive linkage dominator. I guessing you want to run a dominator for the badness look being you are asking about the 750 size. They are tough looking carbs. There are so many variations of dominators when it comes to boosters, throttle linkage, idle circuits, metering etc. The problem is most of the options are on the larger cfm carbs not the 750.
This is a good guestion, let me look at my old notes, I ran a dominator on my Stage 1 Buick in the early 80's and I drove it on the street.
Chuck
