Now there's an inexpensive way to automatically lock up the torque converter in 4th gear without the need for a computer. No need to worry about the speed sensor either! This 700R-4 transmission torque converter lock-up kit lets you run your carbureted
engine with an economical overdrive transmission.
This 700R4 transmission torque convertor kit includes new 4th gear pressure switch, new converter lock-up solenoid, new vacuum control switch, new brake control switch, color coded wiring harness, factory connectors, transmission pan gasket and easy-to-follow instructions. For 700R-4 transmission application
NOTE: Minor transmission disassembly is required.
700R4 Transmission Lock-Up Harness Installation Instructions(PDF)