engine

Harmonic Balancer Torque Specs

for 1993 GMC Sierra 2500 7.4L V8 454 · 4WD

Units

7 fasteners

Seq

Component

Torque

Angle

—

Cover Bolts

12 lb-ft · 16 Nm

—

Crankshaft Pulley Bolt

Critical

Often TTY - check spec, may require impact | ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

133 lb-ft · 180 Nm

—

Gasket Bolts

Critical

15 lb-ft · 20 Nm

—

Harmonic Balancer Bolt

Critical

Often TTY, may need impact | ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

133 lb-ft · 180 Nm

—

Mounting Bolts

Critical

35 lb-ft · 47 Nm

—

Mounting Bolts

20 lb-ft · 27 Nm

—

Sensor Bolts

8 lb-ft · 11 Nm

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