Sonnax 700R4 77701-076 Servo Release Check Valve 700-R4 4L60 GM Transmission
700R4, 4L60. Servo Release Check Valve. If your transmission has a 2-3 flare up or a 3-2 tie up, this valve may be the problem. This item is designed to give you a clean 2-3 up shift and 3-2 down shift.
700R4 Pressure Boost Kit includes .500″ TV, .296 Reverse Valve & Pink PR Spring
Fits All 1982 – 1993 700R4 / 4L60 Automatic Transmissions. includes. 500″ Throttle Boost Valve. 296″ Reverse Boost Valve & Pink PR Spring. 700-R4, 4L60, MD8 Pump Pressure Boost Kit. 2: Reverse Boost Valve Kit.