Proform 66980B Vacuum Advance HEI Distributor with Steel Gear and Blue Cap for Compatible with/Replacement for Ford 351C-400/429/460

Utilizing the durable and dependable High Energy Ignition (HEI) system pioneered by GM, these distributors avoid the unsightly wiring of stock Ford electronic ignition systems by installing this one piece distributor with an internally positioned coil and module. Easy to install: just connect one 12 Volts hot wire to the distributor. These units offer calibrated advance curves that are optimized for maximum combustion efficiency and for the elimination of detonation damage and throttle ping. Assembled from precision made parts for advance curve smoothness. Offers longer term durability and a higher Voltage spark that permits a bigger spark plug gap, resulting in more power and reduced plug fouling. Each unit includes a high-power coil, a premium high dielectric cap with brass terminals and a low saturation ignition module.