Tune-Up - V8: Adjustments: Distributor

California 5.0L and 5.7L engines are equipped Delco-Remy High Energy Ignition with Electronic Spark Timing (HEI-EST).

Federal 5.0L high compression (9.2:1) engines use Electronic Spark Control (ESC) ignition system with detonation sensor.

All other engines are equipped with High Energy Ignition (HEI) systems and no adjustments are required.

Fig 1: Firing Order & Timing Mark (Magnetic Timing Pick-Up Is Located At 10 Degrees ATDC)