DUI HEI Distributor international V8 USA Made!

Performance Distributors is proud to offer the D.U.I. (Davis Unified Ignition) distributor for International V8 engines!  The D.U.I. is a one-piece ignition system that incorporates the coil and module inside the distributor. Only one 12 volt hot wire is needed for hookup. The D.U.I. features a 50,000 volt coil and the high dwell Dyna Module. These components work together to produce a longer duration spark that is strong enough to fire a massive .055" spark plug gap! The larger plug gap burns the fuel mixture more completely, leading to more power, better fuel efficiency and cleaner spark plugs. The D.U.I. allows FULL voltage into the ignition system so no ballast resistor is required. Every D.U.I. is hand assembled to exact tolerances – no mass production. Each unit is calibrated on a Sun Distributor Machine with a super smooth advance curve to provide instant throttle response, more power and eliminate engine damaging detonation. A non-adjustable vacuum advance is also utilized to compliment the mechanical advance for the best drivability. No trial and error for you, the D.U.I. is ready to drop in and run when you receive it!

Performance Distributors International D.U.I. is built for durability and longevity. The unit features upper and lower oil impregnated bronze bushings, high strength aluminum housing and solid steel main shaft. With the internal electronic components, the D.U.I. is virtually mud and water proof, making it ideal for off-road conditions.

Fits 266-304-345-392 CID

IMPORTANT NOTICE: Due to the large size of the DUI, the thermostat housing must be modified to allow for distributor clearance. We provide the thermostat housing with the order but core housings are scarce and sometimes take longer than expected for us to receive and modify. This can delay shipping significantly. To avoid any further delay, you can modify your existing thermostat housing and the following video explains how: T-Stat Modification Video. If you chose to modify your own housing, the price is $25.00 less via the pull-down menu on this page.

The vacuum advance may need to be removed if adequate space is not available. This can be done using the enclosed vacuum advance eliminator plate.

GM High Energy Ignition (H.E.I.) parts such as a coil, module, cap or rotor will fit right on the D.U.I. These parts can be found at any local auto parts store. 

Please note that DUI Distributors may not be ready for immediate shipping. The attention to quality and detail requires us to build each unit per order, and due to this process orders can take 4-6 weeks to complete before shipping out. During our busy season (March-September), build times can take slightly longer.

*Not Legal For Sale or Use on Any Pollution-Controlled Vehicle in California.

 

 

• Fits Fits 1967-1979 International Harvesters
• Models All with 266-304-345-392 Cubic Inch International Engines
• Simple One Wire Hookup!
• Internal Coil and Module, and Includes Power Connector Plug and Tach Plug
• Instant Throttle Response
• Custom Tailored Advance Curve
• Mud, Water and Vibration Proof
• New Gear Installed
• *Not Legal For Sale or Use on Any Pollution-Controlled Vehicle in California
• Made in the USA!