Manual Valve Body Kit w/ Engine Braking - Standard Pattern

MANUAL VALVE BODY KIT W/ENGINE BRAKING (STD PATTERN)

The Coan Racing COA‑32012 Manual Valve Body Kit with Engine Braking (Standard Pattern) transforms a TH350 transmission into a fully manual unit with precise hydraulic control and added deceleration capability. This comprehensive kit includes a precision-machined valve body, hardened separator plate, gaskets, servo spacers, a modulator plug, and a performance-enhanced 2–3 accumulator plate for firmer line pressure and crisp shifting. To install, the kit requires relocating or plugging hydraulic circuit ports, removing the governor, and discarding standard check balls before assembly.

Engine braking is seamlessly incorporated into the hydraulic circuit, allowing reliable downshift resistance and improved vehicle control under deceleration, ideal for performance driving scenarios where controlled slowing is important. The kit’s standard shift sequence mirrors OEM pattern layout while transitioning control entirely to the driver, resulting in consistent, on‑command shifts without automatic interference. Coan’s COA‑32012 is engineered for durability and repeatability in high-load, high-RPM applications, making it a solid choice for race, street performance, or towing setups where immediate shift response and precise engine braking are essential.