The vintage torque converter style and design dictates the stator be prevented from rotating below any ailment, that's why the term stator. In practice, however, the stator is mounted on an overrunning clutch, which helps prevent the stator from counter-rotating with respect to the primary mover but lets forward rotation. https://torque-converter-clutch81456.blogunok.com/34161845/how-much-you-need-to-expect-you-ll-pay-for-a-good-torque-converter-clutch