Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2007IMPALA V6-3.5LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER HEAD ASSEMBLYSPECIFICATIONS
2007 Chevrolet Impala V6-3.5L
Cylinder Head Assembly: Specifications
2007 Chevrolet Impala V6-3.5LSECTION Specifications
Cylinder Head
Combustion Chamber Depth - at Measurement Point 2.2 mm 0.087 in
Surface Finish - Maximum 2.8 RA
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
Valve Guide Bore - Exhaust 8.01 mm 0.315 in
Valve Guide Bore - Intake 8.01 mm 0.315 in
Valve Guide Installed Height 16.6 mm 0.654 in
Cylinder Head Bolt

Notice: This component uses torque-to-yield bolts. When servicing this component do not reuse the bolts, New torque-to-yield bolts must be installed. Reusing used torque-to-yield bolts will not provide proper bolt torque and clamp load. Failure to install NEW torque-to-yield bolts may lead to engine damage.
First Pass 60 N.m 44 lb ft
Final Pass 95 degrees
Exhaust Manifold Bolt 20 N.m 15 lb ft
Upper Intake Manifold Bolt/Stud 25 N.m 18 lb ft
Lower Intake Manifold Bolt - Center

First Pass 7 N.m 62 lb in
Final Pass 13 N.m 115 lb in
Lower Intake Manifold Bolt - Corner

First Pass 7 N.m 62 lb in
Final Pass 25 N.m 18 lb ft
Camshaft sprocket bolts Tighten the bolts to 16 N.m (12 lb ft).
Combustion Chamber Depth - at Measurement Point 2.2 mm 0.087 in
Surface Finish - Maximum 2.8 RA
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
Valve Guide Bore - Exhaust 8.01 mm 0.315 in
Valve Guide Bore - Intake 8.01 mm 0.315 in
Valve Guide Installed Height 16.6 mm 0.654 in
Cylinder Head Bolt
Notice: This component uses torque-to-yield bolts. When servicing this component do not reuse the bolts, New torque-to-yield bolts must be installed. Reusing used torque-to-yield bolts will not provide proper bolt torque and clamp load. Failure to install NEW torque-to-yield bolts may lead to engine damage.
First Pass 60 N.m 44 lb ft
Final Pass 95 degrees
Exhaust Manifold Bolt 20 N.m 15 lb ft
Upper Intake Manifold Bolt/Stud 25 N.m 18 lb ft
Lower Intake Manifold Bolt - Center
First Pass 7 N.m 62 lb in
Final Pass 13 N.m 115 lb in
Lower Intake Manifold Bolt - Corner
First Pass 7 N.m 62 lb in
Final Pass 25 N.m 18 lb ft
Camshaft sprocket bolts Tighten the bolts to 16 N.m (12 lb ft).
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.