Cylinder Head Assembly: Specifications

2012 Chevrolet Impala V6-3.6LSECTION Specifications











Replace all cylinder head bolts

Cylinder Head Bolt - M8

First Pass 15 Nm (11 lb ft)
Final Pass 75 Degrees

Cylinder Head Bolt - M11

First Pass 30 Nm (22 lb ft)
Final Pass 150 Degrees

Left Sequence:




Right Sequence:





Warpage less than 0.05 mm (0.002 in)

Camshaft bearing cap
Tighten 10 Nm (89 lb in)
Loosen bolts (1, 2, 3, 4)
Retighten bolts (1, 2, 3, 4) 10 Nm (89 lb in)

Right (DI):




Left (DI):





Intake manifold Specifications

Exhaust manifold Specifications

Camshaft gear Specifications
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.