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Ignition System: Distributor

All models are equipped with TFI-IV, EEC-IV ignition system. The distributor has a die-cast base which incorporates an integrally mounted TFI-IV ignition module, a Hall effect vane switch stator assembly, and provision for a fixed octane adjustment. No distributor calibration or adjustment is required on this system.

Fig 1: 4.9L Timing Marks & Firing Order
G8330
NOTE: Timing instrument should be connected to No. 1 spark plug wire using an adapter or clip-on connector. Do not puncture spark plug wire or boot to make connection.
NOTE: Do not disconnect or connect distributor in-line "SPOUT" connector with ignition on. TFI-IV module subject to damage from voltage spike.