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Home >> GMC >> 1998 >> Forward Control 7.4 B >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Specifications - 7.4L >> Ignition System >> Spark Plugs
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Spark Plugs

SPARK PLUG TYPE

Application Part No.
7.4L AC 41-932
SPARK PLUG SPECIFICATIONS

Application Gap In. (mm) Torque Ft. Lbs. (N.m)
7.4L .060 (1.52) (1) 14 (20)
(1) Tighten spark plugs to 22 ft. lbs. (30 N.m) if using a NEW cylinder head.
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