the bigger blowers need 2 carbs because a singel carb cannot flow enough cfm.

one thing to remember about boost is that the number only means something to that specific engine. two 454's with blowers can have the same boost but very different power numbers. why? boost is read in the intake, not the cylinder. if the heads do not flow or the valves are very small then you can have a higher boost and still not get it to the cylinder to make power. a good flowing head, cam and exhaust will make more power with less boost than a bad flowing head, cam and exhaust with lots more boost.

Way to bring up a thread from the graveyard Mike!! Dam Miller 64's will get ya everytime...lol

Well I'm glad he did. As a noob about to dive into rebuilding two BBC's with 250's and dominators straped to the top this info was worth reading. Thanks!!!

no more 64 for me,im on a coors lite kick,lol,bt you are correct,guess i didnt notice it was a old thread.

that's ok....still an interesting thread

Sell the dominator and go with twin carbs, much better setup. If you keep the dominator, watch the front cylinders, they will be considerably leaner than the rears.