LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2010 >> Impala V6-3.9L >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Cylinder Head Assembly >> System Specifications
April 5, 2026: LEMON Manuals is launched! Read the announcement.

System Specifications

Cylinder head

When servicing this component do not reuse the bolts, New torque-to-yield bolts must be installed

Left - Right:





First pass 60 Nm (44 lb ft)
Final pass 140 degrees

Surface Flatness - Block Deck 0.08 mm per 152 mm (0.003 in per 6 in)
Surface Flatness - Exhaust Manifold Deck 0.1 mm (0.004 in)
Surface Flatness - Intake Manifold Deck 0.1 mm (0.004 in)

Lower intake manifold





Tighten bolts 1, 2, 3, 4 20 Nm (15 lb ft)
Tighten bolts 5, 6, 7, 8 25 Nm (18 lb ft)

Exhaust manifold 20 Nm (15 lb ft)