Originally Posted by bryanm

I just got my motor back in my car and running but now it has a little stumble from about 3500-4200 rpm when you ease into the throttle. If I just whack the throttle hard it revs clean. It did not do this on the dyno but I had my high speed air bleeds on my Demon carb drilled out to supposedly the same size that they were on the dyno. I am thinking that they got drilled out to big. What do you guys think, is that the cause?