MSD
Chevy BB Tall Block Cam Sync Plug
Part # 85142
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MSD's Chevy extra tall 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.
Chevy BB Tall Block Cam Sync Plug
Estimated Ship Date: 06/30/2026
Free Shipping - Lower 48 US States
MSRP $506.95
$403.95
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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. MSD's cam sync is a plug and play with Holley EFI systems and can easily interface with most aftermarket EFI systems. The cam sync plug will have 2-3/4" of adjustment.
Features:
- O-ring seals can be added to modified blocks to improve oil pressure control
- 2-3/4” of adjustment for different deck heights
- Plug-and-play with Holley EFI and compatible with other aftermarket EFI systems requiring a cam sync signal
- Built-in L.E.D. makes set-up and indexing quick and easy
- Shaft is guided by a sealed ball bearing and an extra long sintered bushing
- Chevrolet version is supplied with a equivalent Melonized distributor gear and adjustable slip collar for blocks with a non-standard deck height
- CNC billet housing with black anodized cap provide good looks and excellent durability
- Special oil tract improves lubrication to the distributor and cam gear
| Brand | MSD |
|---|---|
| Category | Ignition |
| Color | Black and Silver |
| Distributor Cap Included | Yes |
| Distributor Type | Cam Sync Plug |
| Emission Code | 5 |
| Engine | Chevy Tall Deck |
| Gear | Cast, Melonized |
| Gear Material | Cast Iron Melonized QPQ Coated |
| Grade Type | Performance |
| Ignition Box Required | EFI |
| Ignition Coil Included | No |
| Ignition Rotor Included | N/A |
| part type | Distributor |
| Product Type | Cam Sync |
| Sensor | Hall-Effect |
| Sub Category | Distributor and Magneto |
| Warranty | Manufacturer's Limited 1 Year Warranty |
| UPC | 090127106761 |
| Warning | California Proposition 65 |
| Part Number | 85142 |
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5
This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Manufacturer's Limited 1 Year Warranty: See Details
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