JEGS AMC/Jeep HEI Distributor features a coil-in-cap design that produces 50,000 volts and allows the spark plug gaps to be opened up to .050"-.055". Includes a performance module for a longer dwell circuit and full-coil saturation, brass terminal cap and rotor for maximum voltage output, adjustable vacuum advance, coated weights for corrosion resistance, welded weight pins for durability and a standard-type iron distributor gear for hydraulic or solid flat tappet cams. Fits AMC V8 290, 304, 360, 390, and 401.