This Accel Super Coil Pack is engineered for faster rise time, longer spark duration and increased performance. It features advanced section technology, a silicone magnetic steel core with optimized winding, and a turns ratio resulting in higher energy, voltage output, and longer arc duration. Plus, the special hi-temp epoxy case resists shock and vibration, while increasing thermal conductivity. Compatible with Ford's EDIS computer controlled ignition system as well as a Crane or MSD CD DIS ignition systems.