700R4 Hydraulic Torque Converter Lock Up. Offers 5 lock-up speed choices.
* The lock up valve and sleeve was used in early valve bodies 81 thru 86. The later valve bodies, 86 thru 89, kept the valve bore, but were non-functional. 90 thru 93 valve bodies were produced without the valve bore. As long as the bore is in the valve body, the hydraulic package will apply. * This kit includes 5 different springs giving 5 select lock up speed choices. * This kit includes all valves necessary. * It allows non-electrical operation of lock up. * No more searching through cores looking for the inner valve.