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Home >> GMC >> 1994 >> Forward Control 4.3 Z, Automatic >> Repair and Diagnosis >> Engine Performance >> Specifications >> Engine Controls - Specifications - Gasoline >> Ignition System >> Ignition Timing
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Ignition Timing

NOTE: For timing adjustment procedures, see appropriate ADJUSTMENTS - GASOLINE article in the ENGINE PERFORMANCE section.
IGNITION TIMING (Degrees BTDC @ RPM)

Application (1) Man. Trans. (2) Auto. Trans.
4.3L (VIN W & Z) (3) 0 @ Idle 0 @ Idle
5.0L (VIN H) 0 @ Idle 0 @ Idle
5.7L (VIN K) 0 @ Idle 0 @ Idle
7.4L (VIN N) 4 @ Idle 4 @ Idle
(1) With transmission in Neutral.
(2) With transmission in Neutral or Park.
(3) Timing is not adjustable with DIS.
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