Method of managing a changeover between an activation condition and a deactivation condition and viceversa of a bank (E1, E2) of an internal combustion engine (E) comprising a first (E1) and a second bank (E2), the method comprising a step of respectively gradual decrease or increase of a torque supplied by a first bank (E1) subject to deactivation or reactivation and a corresponding increase or decrease of a torque supplied by the second bank (E2).