If you have converted your Delco distributor to a Pertronix solid state distributor this is the coil for you. This coil produces 40,000 volts. This coil is the 3.0 Ohm primary resistance coil. Its higher voltage allows larger spark plug gaps for added power, smoother response and better fuel economy. These coils are internally resisted so installation and wiring is drastically simplified. Our oil filled coils offer great heat control for street driven vehicles, while our epoxy filled coils provide superior winding support for high vibration environments in Willys and Jeep vehicles. 6" Overall Height, 73:1 Turns Ratio.