Cylinder Head Assembly

Cylinder Head Replacement - Left Side & Right Side

Install NEW cylinder head bolts (1-8).

Tighten Cylinder Head Bolts
First Pass 50 N.m (37 lb ft)
Final Pass 120 degrees





Lower Intake Manifold bolts.
Tighten the lower intake manifold bolts in sequence to 15 N.m (11 lb ft).





Upper Intake Manifold Bolt.
Tighten the upper intake manifold bolts in sequence to 10 N.m (89 lb in).

Displacement 3.8L (231 cu in)
Bore 96.52 mm (3.8 in)
Cylinder Head
Combustion Chamber Depth - at Measurement Point 3.9166-5.4356 mm (0.154-0.214 in)
Cylinder Head Height/Thickness 103.492-104.178 mm (4.0745-4.1015 in)
Surface Finish 0.0032 mm (0.000125 in)
Surface Flatness - Block Deck 0.1016 mm (0.004 in)
Surface Flatness - Exhaust Manifold Deck 0.1016 mm (0.004 in)
Surface Flatness - Intake Manifold Deck 0.1016 mm (0.004 in)
Valve Guide Bore - Exhaust 8.001-8.0213 mm (0.3150-0.3158 in)
Valve Guide Bore - Intake 8.001-8.0213 mm (0.3150-0.3158 in)
Exhaust Manifold
Surface Flatness 0.5 mm (0.02 in)
Camshaft Bearing Inside Diameter - Front and Rear 46.970-46.934 mm 1.8428-1.8492 in
Camshaft Bearing Inside Diameter - Middle #2, #3 46.977-46.942 mm 1.8481-1.8495 in
Camshaft
Camshaft Bearing Inside Diameter - 1 and 4 46.970-46.934 mm (1.8478-1.8492 in)
Camshaft Bearing Inside Diameter - 2 and 3 46.977-46.942 mm (1.8481-1.8495 in)
Camshaft Sprocket Bolt
First Pass 100 N.m (74 lb ft)
Final Pass 90 degrees

Exhaust Manifold Installation - Right Side





Install the exhaust manifold studs.
Tighten the exhaust manifold studs to 10 N.m (89 lb in).





Install the exhaust manifold bolts and nuts.
Tighten the exhaust manifold bolts and nuts to 30 N.m (22 lb ft).

Exhaust Manifold Installation - Left Side





Install the exhaust manifold studs.
Tighten the exhaust manifold studs to 10 N.m (89 lb in).





Install the exhaust manifold bolts and nuts.
Tighten the exhaust manifold bolts and nuts to 30 N.m (22 lb ft).

Exhaust Manifold Heat Shield Nut 20 N.m (15 lb ft)
Exhaust Manifold Pipe Nut 40 N.m (30 lb ft)