This Shift Correction Kit from Superior will improve all 700-R4 & 4L60 Transmissions from 1982-1993 (excluding the electronic version: 4L60E). This Shift Correction Kit helps eliminate the following problems: Inadequate pressure rise, burned clutches and band, erratic shift points, soft or bump upshifts, bump downshifts, raises lock-up speed and 2nd & 3rd flare up. This Shift Correction Kit will come with installation directions in English and Spanish and illustrations.