Dodge Small Block DUI Distributor


**Current Estimated Shipping Time For This Distributor is 6-8 Weeks**

The D.U.I. Advantage

  • Simple One Wire Hookup
  • Allows For Wider Plug Gaps
  • Instant Throttle Response
  • No Spark Box Needed
  • Custom Tuned For Your Engine
  • Hand Built to Exact Tolerances
  • 50,000 Volt Coil and Dyna Module


It’s time for you to start Driving Under the Influence of the D.U.I. (Davis Unified Ignition)! Drop in one of our powerful D.U.I. Distributors and you’ll feel the difference. Whether you drive a Challenger, Charger or a Dodge Truck, the D.U.I. will improve the performance of your Dodge engine. If you’re installing a Mopar Performance crate engine, the D.U.I. is the ideal ignition system for it.

Our D.U.I. is the only one-piece ignition system available for Dodge and Chrysler engines. This is a simple drop-in unit with the coil inside the cap and the module inside the distributor. Just connect one 12 volt hot wire to the distributor and you’re ready to run! A tachometer hook up is also provided. Your engine compartment will look much cleaner as the D.U.I. will eliminate ALL of the messy wiring that is found on stock Dodge/Chrysler ignition systems.

The Dodge/Chrysler D.U.I. is available in either the Street/Strip version (up to 7000 rpms) or the Racing version (up to 10,000 rpms). Both units will allow you to run a whopping .055″ spark plug gap, which provides a more powerful burn of the fuel mixture for increased horsepower. Our Dyna Module is designed with more dwell time which allows the coil to produce a hotter spark. Full voltage can be run through the D.U.I. as no ballast resistor is needed. Stock Mopar systems, and many aftermarket systems require a ballast resistor which reduces voltage in the ignition system. Full voltage means a hotter spark at the plugs and more performance from your Mopar.

Every D.U.I. is custom curved on a distributor machine based the specs of your engine. A super smooth advance curve will eliminate engine damaging detonation and provide instant throttle response. The Dodge D.U.I. is a real work of craftsmanship and although it is uniquely designed, replacement parts can be found at any auto parts store. GM H.E.I. (High Energy Ignition) parts will fit right on the D.U.I. Built for durability, the D.U.I. has an upper and lower bushing, unlike stock Chrysler distributors which only have one bushing. The DUI is polished and lubed as it is assembled so that all mechanical parts perform smoothly and at their maximum performance level.

DIMENSIONS: The DUI measures 8.5″ from the block to the top of the cap. The diameter of the distributor cap is 5 1/4″. If these measurements are too large for your application, please consider the Tri-Power Ignition System: Part Number 71120.

WARRANTY: The Street/Strip DUI has a one year warranty from date of purchase. Racing versions have a 30 day warranty.

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 several days 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.

LiveWires For Dodge DUI

Delivering a high voltage spark to the plug requires a quality spark plug wire. Our LiveWires are unsurpassed in quality by offering low resistance and high temperature protection. The 8 mm wire is covered by a heat treated fiberglass sleeve that protects the wire up to 1400° F. The spiral wound core is radio suppression so there is no radio noise or computer interference. Unlike universal plug wire sets, LiveWires do not require any assembly. All sets are custom fit and numbered at each end for the correct cylinder. Colors available are black, blue, purple, red, silver and yellow. Please visit our LiveWires page for more information.

Additional information

Weight N/A
Dodge Small Block V8 DUI

Dodge 318-318A Poly-340-360 CI (Street/Strip Version), Dodge 318-340-360 CI (Race Version – Mechanical Adv. Only), Dodge 318-340-360 CI (Race Version w/ Vacuum Advance)

Color Choice

Black, Blue, Clear, Red, Yellow