1181 Electronic Ignition Conversion Kit for Delco 1957-1974 8-Cyl, Single Point, 12-Volt Fits for Most DELCO 8-Cyl Function: Delivers two of the voltage to the spark plugs, increasing horsepower, fuel economy, and spark plug life Advantages: 2:1 improvement over "points" in current fall time for increased coil output Rotating cobalt magnets trigger a Hall Effect integrated circuit, no points to burn, no moving parts to wear out .