Is there a condenser on HEI ignition systems?
A “condenser” is simply a capacitor. HEI do have a capacitor/condenser within harness and it’s adjacent to plug that attaches to ignition control module (beneath rotor). The HEI condenser/capacitor is employed to suppress “radio noise”. OE GM HEI have a round condenser while many aftermarket HEI have a squarish-flat condenser. A replacement for OE round HEI condenser is supplied by Standard Motor Products (aka Standard Ignition) as part number RC-3.