Holley's Dual Sync distributors feature an improved shutter wheel, dual Hall effect sensors, and an MSD-style cap and rotor. Built primarily for sequential fuel injection, they can also serve as a crank trigger for TBI setups or with other EFI systems that support Hall effect crank and cam sensor inputs. The QPQ-coated shutter wheel is pinned and welded to the shaft for corrosion resistance and durability, and the housing retains MSD shaft diameters for easy sourcing of a bronze gear.
Specifications:
- Distributor Type: EFI Dual Sync
- Sensor Type: Dual Hall effect (crank and cam)
- Housing: Black anodized CNC-machined billet aluminum
- Gear: Hardened steel
- Shutter Wheel: Precision-machined, pinned and welded to the shaft
- Setup Aid: Integrated LEDs for easy timing setup
- Cap Option: Blank cap available for Coil-On-Plug applications
- Engine Application: Mopar 383-400
- Part Number: 565-209BK
Plug-and-play with Holley EFI; when used with Sniper EFI, Ignition Adapter 558-493 is required.
FAQ
Does this distributor work with Sniper EFI?
Yes, but Ignition Adapter 558-493 is required when pairing this Dual Sync distributor with a Sniper EFI system.
Can this distributor be used as a crank trigger for a TBI system?
Yes. While designed primarily for sequentially injected installations, it can also be used as a crank trigger for TBI systems.
What sensor technology does this distributor use?
It uses dual Hall effect sensors — one for crank signal and one for cam signal — providing precise, noise-immune timing control for sequential EFI operation.
Can I source a bronze gear for a billet camshaft?
Yes. This distributor maintains standard MSD shaft diameters, making it easy to source a bronze distributor gear when needed.
