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).



RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

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.