Tune-Up - V8: Distributor

All models are equipped with High Energy Ignition systems and no adjustments are required.

Fig 1: 4.1L (250") Firing Order & Timing Mark Identification

Courtesy of GENERAL MOTORS COMPANY

Fig 2: 4.3L (260") & 5.0L (307") Firing Order & Timing Mark Identification

Courtesy of GENERAL MOTORS COMPANY

Fig 3: 4.4L (267"), 5.0L (305") & 5.7L (350") Firing Order & Timing Mark Identification

Courtesy of GENERAL MOTORS COMPANY

Fig 4: 6.0L (368") Firing Order & Timing Mark Identification

Courtesy of GENERAL MOTORS COMPANY