543 build

yep more convertor stall like 3500 or so, better gears at least 3.73, and more ait and cam to boot.

You are going to starve that many cubes. Think of a HP440 6pack. Like 1350 cfms of carb and most with sticks or 3k + stall speeds from the factory.

You have a setup that surem does not need to spin very high to make a ton of power,, but that large size requires a lot of air/fuel to work.

And in a heavy ride as BJR says too, combo is off...