I always hated the 722.4 transmission in my 602 sedan, but my problem was the inconsistent kickdown function. Sometimes it would automatically downshift when I floored it, and sometimes it wouldn't. I got used to just manually downshifting for nearly a year. I later swapped in a good low mileage rebuilt 722.3 and I couldn't be happier.
Both the quality of the shifts (modulator) and timing of the upshifts (bowden cable) can be adjusted. I recently rehabbed the shift characteristics of a 722.4 in a 123 chassis by replacing both those items, and then adjusting them according to specs. The results were like night and day. Well worth your time and expense.
Both the quality of the shifts (modulator) and timing of the upshifts (bowden cable) can be adjusted. I recently rehabbed the shift characteristics of a 722.4 in a 123 chassis by replacing both those items, and then adjusting them according to specs. The results were like night and day. Well worth your time and expense.
