Cam Sync Plug - BBC w/ Tall Deck Block

The MSD Ignition Cam Sync Plug for BBC with Tall Deck Block is a precision oil pump drive component designed for Big Block Chevy engine builders and high-performance ignition system integrators. This hall-effect camshaft synchronization distributor plug combines pro-billet aluminum construction with a melonized gear assembly to deliver reliable cam timing signal feedback in demanding engine applications where accurate ignition timing depends on exact crankshaft-to-camshaft synchronization.

The plug features adjustable positioning to accommodate varying engine configurations and deck heights, which is critical when installing tall-deck big block Chevrolet blocks where standard distributor accessories may not align correctly. The hall-effect sensor design provides digital signal output to MSD ignition controllers and other modern engine management systems, eliminating the drift and signal degradation associated with older point-based cam sync methods. The melonized finish on the gear resists wear and corrosion during long engine run-in periods and in street or race environments where engine bay temperatures and humidity vary widely.

This component is engineered for builders working with tall-deck big block Chevy applications, stroker builds, and custom engine platforms where OEM distributor geometry cannot be used. It serves as a critical interface between the engine's mechanical cam rotation and the ignition system's digital control logic, ensuring that spark timing remains synchronized to actual cam position rather than relying on crank-only timing assumptions. Each unit is sold individually.

MSD Ignition has established credibility in performance ignition systems for nearly four decades, with particular strength in distributor-based cam sync solutions for carbureted and EFI engines. The adjustability of this plug reflects real-world builder feedback: deck height variations in big block castings and custom block work create fitment challenges that fixed designs cannot solve.