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Home >> GMC >> 1990 >> R 2500 P/U 2WD V8-454 7.4L >> Repair and Diagnosis >> Specifications >> Electrical Specifications >> Ignition Timing
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Ignition Timing


ENGINE TIMING


Initial Timing M/T. [1] 4~

Initial Timing A/T. [1] 4~




Notes:

[1] At idle.