MSD Cam Sync Distributor Plugs for Ford EnginesYouTube Button

Chevy SB/BB CAM Sync Plug

MSD’s cam sync plugs install in place of a traditional distributor to drive the oil pump and provide a cam sync signal when running a Holley EFI, or other aftermarket sequential EFI system requiring a cam sync signal.

PART# 85141

$255.95   Suggested Retail
$229.95   Your Price
Estimated shipping date: 04/19/2018
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MSD’s cam sync plugs are the perfect solution when running an aftermarket sequential EFI system with coil-per-cylinder ignition. The cam sync plug installs in place of a traditional distributor, providing a hall-effect cam sync signal needed for the EFI system to reference the # 1 cylinder. For wet sump applications, the plug also drives the oil pump. MSD’s cam syncs are plug and play with Holley EFI systems and can easily interface with most aftermarket EFI systems.


  • Built-in L.E.D. makes set-up and indexing quick and easy
  • Plug-and-play with Holley EFI and compatible with other aftermarket EFI systems requiring a cam sync signal
  • CNC billet housing with black anodized cap provide good looks and excellent durability
  • Chevrolet version is supplied with a cast Melonized distributor gear and adjustable slip collar for blocks with a non-standard deck height


Emission Code3
EngineChevy Small and Big Block
GearCast, Melonized
Product TypeCam Sync Plug
Part Number85141

Tech Resources


This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

*Free Shipping & Handling only offered to the continental US on orders over $100.

Some parts are not legal for use in California or other states with similar regulations.