Lock-Up Switch Kit, 700R4 & 200R4 Transmission (59-87 El Camino; 71-77 Sprint; 78-87 Caballero)

Transmission Control Solution. The Lock-Up Switch Kit for 700-R4 and 200-R4 transmissions enables lock-up operation without the need for the factory transmission controller. This kit engages the torque converter lock-up by utilizing a 1/4" NPT threaded 4th gear pressure port, improving efficiency and drivability in applications where the factory controller is absent or removed.

Construction and Appearance. The kit includes a durable pressure switch and an inline fuse assembled within a robust housing designed to withstand typical under-hood conditions. Components are engineered for reliable performance and longevity, focusing on functionality and durability.

Installation. Ensure the transmission has the proper 1/4" NPT threaded 4th gear pressure port before installation, as adding this port by drilling is generally not recommended. Installation is moderately straightforward for experienced technicians familiar with these transmissions and basic electrical wiring.

Application. Specifically designed for use with 1959-1987 El Camino, 1971-1977 Sprint, and 1978-1987 Caballero models, providing compatibility with these vehicles’ transmission configurations.

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