Yes the intake works.However on a mild 440 I would opt for the added low end grunt of the dual plane rpm.ANother place where the rpm is likely better on a mild motor(or in a heavy car with mild gearing)is part throttle response.You see a lot of part throttle on the street. I am a big fan of the intake(I have run it on my 496 and my 465),just not on stockish builds with medium gears and full weight cars.
