Powertrain Management: Application and ID

ENGINE VIN CODE I.D. (LIGHT DUTY) [1] Z
ENGINE VIN CODE I.D. (HEAVY DUTY) [1] 5
Engine 5.9L (360 cu. in.) V8
Fuel Control System TBI - Dual Point
Ignition System Electronic Ignition (Hall Effect)
Computer System Single Module Engine Controller (SMEC)
Remarks:
[1] The eighth digit of the VIN denotes engine code.
Note: Any vehicle over 8501 lbs. GVW is considered Heavy Duty
Note: Any vehicle under 8500 lbs. GVW is considered Light Duty