D.U.I. Racing Coil Kit - Includes Coil - Cap - Rotor & Screws - 1974-Up Chevrolet V8

Race Coil Kit - GM DUI/HEI V8 Distributor - L-Clamp Hold - Includes Racing Coil, Cap, Rotor and Top Cover - Red Cap

The D. U. I. Racing Coil Kit is capable of 9000 rpm's. That's almost twice the output of a stock HEI coil! The coil comes installed in a brass terminal cap and includes the rotor and nylon rotor hold down screws. Spark plug gaps can be widened to between . 050" - . 055" because of the higher voltage output of this coil kit. The wider plug gaps will allow more spark energy into the combustion chamber providing a better burn of the fuel mixture and increasing horsepower. The kit fits on ALL internal HEI coil applications.