Ignition System - HEI/Est/ESC: Overhaul

Ensure pick-up assembly arm is correctly installed on pin. If not, arm can float and cause ignition timing to vary. To prevent corrosion, ensure module terminals are lubricated with petroleum jelly before installation. To prevent heat damage, coat bottom of module and module rest pad in housing with silicone grease. Before installation of roll pin in driven gear, ensure timing mark on roll pin and rotor tip align. See Fig 1 through Fig 3.

Fig 1: Exploded View of HEI Distributor

Courtesy of GENERAL MOTORS CORP.

Fig 2: Exploded View of HEI-EST Distributor With Sealed Connector

Courtesy of GENERAL MOTORS CORP.

Fig 3: Exploded View of HEI Distributor Without Sealed Connector

Courtesy of GENERAL MOTORS CORP.