engine

Head Gaskets - Both Torque Specs

for 2008 Pontiac G8 6.0L V8 · RWD

Units

15 fasteners

Seq

Component

Torque

Angle

—

Camshaft Cap Bolts

Critical

Tighten in sequence from center outward, multiple passes

10 lb-ft · 14 Nm

—

Camshaft Sprocket Bolt

Critical

Hold cam with wrench on hex

59 lb-ft · 80 Nm

—

Crankshaft Pulley Bolt

Critical

Often TTY - check spec, may require impact

133 lb-ft · 180 Nm

—

Cylinder Head Bolts

Critical

Multi-step + angle

88 lb-ft · 119 Nm

—

Cylinder Head Bolts (M11)

Critical

EQUAL LENGTH BOLTS. Step 1: 22 lb-ft. Step 2: +90 degrees. Step 3: +90 degrees.

22 lb-ft · 30 Nm

90°

—

Cylinder Head Bolts (M8 Upper)

Critical

Tighten last. 22 lb-ft.

22 lb-ft · 30 Nm

—

Exhaust Manifold Nuts

Critical

34 lb-ft · 46 Nm

—

Intake Manifold Bolts

Critical

24 lb-ft · 33 Nm

—

Oil Drain Plug

Critical

Use new crush washer

26 lb-ft · 35 Nm

—

Rocker Arm Bolts

Critical

Tighten with cam lobe pointing away

22 lb-ft · 30 Nm

—

Sensor Mounting Bolts

7 lb-ft · 10 Nm

—

Timing Chain Tensioner Bolt

Critical

Install with pin/clip to compress

18 lb-ft · 25 Nm

—

Timing Cover Bolts - 8mm

Critical

Tighten in sequence

18 lb-ft · 25 Nm

—

Valve Cover Bolts

Tighten in sequence

7 lb-ft · 10 Nm

—

VVT Solenoid Bolt

7 lb-ft · 10 Nm

—

2008 PONTIAC G8

15 fasteners