carb?

[PowerJunkie]

can you put a 440 carb on a stock cc 400ex

[2004exrider]

youll probly be runnin way to rich

[plkmonster2]

You can. Just lean it out. I doubt you will see much gain unless your motor is a heavily modified stock bore. The stock carb does okay for most bores up to 440, without other serious mods.