This Holley HyperSpark distributor drops into a GM 348 / 409 application as a plug-and-play upgrade alongside Sniper EFI and other HyperSpark ignition components. The CNC billet aluminum housing and billet-machined shutter wheel are built to hold timing accuracy at high RPM, and a single Hall Effect sensor keeps the RPM signal free of interference. A patented clear installation cap simplifies setup, and the distributor ships with a wire retainer for spark plug wires and Lucas Racing Performance Gear Break-In Lubricant.
Specifications:
- Application: GM 348, 409
- Distributor Type: Hall Effect
- Rotor Rotation: Clockwise (Right)
- Housing Material: Billet Aluminum
- Housing Finish: Polished
- Gear Material: Cast Iron (Sealed)
- Sub Category: Distributor and Magneto
- Warranty: Manufacturer's Limited 1 Year Warranty
- Part Number: 565-320
This distributor uses a cast iron gear. Consult the camshaft manufacturer before installation to confirm the gear material required, and measure the shaft OD and gear ID before installing.
FAQ
What vehicles does this distributor fit?
It's built for the GM 348 and 409 W-series big block V8 engines, found in the Bel Air, Biscayne, and Impala among others.
What type of trigger does this distributor use?
A single Hall Effect sensor delivers a noise-free RPM signal for accurate, steady timing control.
Can this distributor be run with ECU timing control?
Yes, it supports both ECU timing control and non-timing control setups; additional harnesses may be needed depending on configuration (refer to the installation manual).
What gear material does this distributor use?
It comes with a cast iron distributor gear. Consult your camshaft manufacturer before installation to confirm the gear material required for your cam, and measure the shaft OD and gear ID before installing.
