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 MANUALSFORD2012F 150 2WD V8-5.0LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLY
2012 Ford F 150 2WD V8-5.0L
Cylinder Head Assembly
2012 Ford F 150 2WD V8-5.0LSECTION Cylinder Head Assembly
Cylinder Head
Tighten the new RH cylinder head bolts in 4 stages in the sequence shown.
Stage 1: Tighten to 25 Nm (18 lb-ft).
Stage 2: Tighten to 40 Nm (30 lb-ft).
Stage 3: Tighten an additional 90 degrees.
Stage 4: Tighten an additional 90 degrees.
Tighten the new LH cylinder head bolts in 4 stages in the sequence shown.
Stage 1: Tighten to 25 Nm (18 lb-ft).
Stage 2: Tighten to 40 Nm (30 lb-ft).
Stage 3: Tighten an additional 90 degrees.
Stage 4: Tighten an additional 90 degrees.
Bolt Re-usability
NOTE: The cylinder head bolts must be discarded and new bolts installed. They are a tighten-to-yield design and cannot be reused.
Surface Variation -- Head-to-Block, Head-to-Manifolds and Surface Variation -- Warpage
a Time required for the plunger to leak down 1.6 mm of travel with 222 N force and leakdown fluid in the lash adjuster.
b Before Grafal coating.
Camshaft Bearing Cap
Camshaft - LH
Tighten the bolts in the sequence shown in 2 stages.
Stage 1: Tighten to 6 Nm (53 lb-in).
Stage 2: Tighten an additional 45 degrees.
Camshaft - RH
Tighten the bolts in the sequence shown in 2 stages.
Stage 1: Tighten to 6 Nm (53 lb-in).
Stage 2: Tighten an additional 45 degrees.
Intake Manifold Specifications
Exhaust Manifold Specifications
Tighten the new RH cylinder head bolts in 4 stages in the sequence shown.
Stage 1: Tighten to 25 Nm (18 lb-ft).
Stage 2: Tighten to 40 Nm (30 lb-ft).
Stage 3: Tighten an additional 90 degrees.
Stage 4: Tighten an additional 90 degrees.
Tighten the new LH cylinder head bolts in 4 stages in the sequence shown.
Stage 1: Tighten to 25 Nm (18 lb-ft).
Stage 2: Tighten to 40 Nm (30 lb-ft).
Stage 3: Tighten an additional 90 degrees.
Stage 4: Tighten an additional 90 degrees.
Bolt Re-usability
NOTE: The cylinder head bolts must be discarded and new bolts installed. They are a tighten-to-yield design and cannot be reused.
Surface Variation -- Head-to-Block, Head-to-Manifolds and Surface Variation -- Warpage
a Time required for the plunger to leak down 1.6 mm of travel with 222 N force and leakdown fluid in the lash adjuster.
b Before Grafal coating.
Camshaft Bearing Cap
Camshaft - LH
Tighten the bolts in the sequence shown in 2 stages.
Stage 1: Tighten to 6 Nm (53 lb-in).
Stage 2: Tighten an additional 45 degrees.
Camshaft - RH
Tighten the bolts in the sequence shown in 2 stages.
Stage 1: Tighten to 6 Nm (53 lb-in).
Stage 2: Tighten an additional 45 degrees.
Intake Manifold Specifications
Exhaust Manifold 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.