hey guys. . . i have a buddy with a holley 650. . . hes trying to figure out how to get the secondaries to operate in a manner suitable for a rotary. . . racing beat, obviously, wont disclose their info about modifications. . . i was wondering if anyone could shed some light on it. does he have to have mechanical secondaries? is there another way? im no carb literate fellow so pardon my not so technical vocabulary when it comes to these things.

anyways, any help is appreciated.

thanks,
paul