Add some serious firepower to your Ford engine by installing our DUI Distributor! The all in one
DUI (Davis Unified Ignition) has everything you need for the ignition system in one simple unit. No
external coils, modules or spark boxes are needed! Just one 12 volt hot wire connected to the DUI
will send 50,000 volts of pure spark energy to the plugs and light the cylinders like never before.
Increased horsepower, torque and fuel mileage along with quicker starting and smoother idle are
the benefits of installing the DUI. These gains are made by the high performance coil and module
and custom tuning of the advance weights and springs . The high voltage coil allows spark plug
gaps to be opened up to a massive .055". The dwell in our Dyna-Module has been increased
electronically to allow the coil to produce a longer duration spark. The combination of the large
gap and longer spark provide the most complete combustion of the fuel mixture possible. A
special weight and spring assembly is hand fitted and dialed-in using a distributor machine for
a precise timing curve that will match the specifications of your engine and vehicle. The super
smooth advance provides instant throttle response and maximum power throughout the rpm
range with no pre-detonation. Vacuum advance is provided for improved fuel economy and
cleaner spark plugs. Installation for the hot wire and a tachometer are made simple with the
included connectors. The DUI is built for durability with an upper and lower bronze bushing. Two
bushings provide shaft stability for accurate trigger signals and years of trouble free operation.
The oil impregnated bushings are also known to outlast ball bearings! The Ford DUI is based on
the HEI (High Energy Ignition) system and although it is uniquely designed, replacement parts can
be found at any local auto parts store. Don’t be fooled by the cheap imitation one wire distributors,
the DUI is unsurpassed in quality and is the original one-piece ignition system for Fords!

*Due to the large cap design, the DUI distributor may interfere with the thermostat housing on a
460. A compatible thermostat housing is available for $25.00, part number 84859. The 302 and
351W DUI will not clear a Victor Jr. intake manifold. We can extend the height 1/2" - 1 3/4" for an
additional fee of $75.00. High volume oil pumps are not recommended with the DUI as possible
irregular gear wear can occur. Click Here for additional information. The Street/Strip DUI has a
one year warranty from date of purchase.