Tune-Up - V8: Distributor

On 5.0L models, the TFI-IV ignition system is used. On 5.8L Police models, the Dura Spark II with UIC (Universal Integrated Circuit) ignition system is used. Only basic ignition timing is adjustable on either system.

Fig 1: 5.0L SEFI Firing Order & Timing Marks

Fig 2: 5.0L H.O. SEFI & 5.8L Firing Order & Timing Marks