Why You Should Replace Your Distributor with a DUI Street/Strip Distributor

Davis Unified Ignition (DUI) founder Kelly Davis created the DUI HEI system some 45 years ago. Arguably the first high performance HEI distributor ever, the DUI system has been improved over the years to the point where it is a viable alternative to the Capacitive Discharge (CD) ignitions that are the current benchmark for performance and racing use.

Now called the DUI Street/Strip, the distributor is a drop-in replacement for the factory unit. Just hook up one 12-volt wire and you’re good to go--no external coils or ignition boxes are required.

Inside the distributor is DUI’s Dyna-Module high-dwell module. The module increases the coil saturation time so the built-in 50,000-volt coil produces one long-duration spark rather than several multiple sparks. The longer duration spark improves throttle response and low-end power, and allows you to run spark plug gaps as big as .055 inch. The combination of the larger gap and longer duration spark provides complete combustion of the fuel mixture, which boosts horsepower and torque.

If that wasn’t enough, DUI gives each distributor a custom advance curve based on your engine and vehicle. Provide information like camshaft specs, compression ratio, maximum RPM, and carburetor CFM, and DUI will hand-fit a weight and spring assembly to your distributor and dial a performance advance curve using a Sun distributor machine.

The advance curve provides instant throttle response and maximum power throughout the RPM range with no pre-detonation. Other ignition manufacturers just give you an advance curve kit, leaving the task of setting an advance curve to you.

Most DUI Street/Strip Distributors come with vacuum and mechanical advance. If you have an MGB or Midget, we have a Street/Strip distributor with an electronically-controlled advance. Take that, Lucas.

DUI Street/Strip Distributors are available for these engines:
• Small and big block Chevy
• Chevy 348-409 V8
• Chevy 194-292 inline 6
• AMC 304-401 V8
• Buick 215, 350-455 V8
• Cadillac 368-500 V8
• Small and big block Mopar, 318 Poly, 426 Hemi
• Small block Ford 221-302 and 351W
• Big block Ford 429-460
• Ford 360-428 FE V8
• Ford 315C, 351M, 400 V8
• Ford Flathead V8 229-255
• Ford 144-300 inline 6
• Ford 122-140 Kent four-cylinder
• Jeep 230 (Kaiser), 232-258 inline 6
• Olds 260-455 V8
• Pontiac 261-455 V8
• Toyota 2.2L and 2.4L four-cylinder
• Toyota 3.9L and 4.2L inline 6
• Volkswagen 1950-66 four-cylinder

SEE DUI STREET/STRIP DISTRIBUTORS AT SUMMIT RACING