Engine Type

V8 OHV

Displacement

5.7 liter (5,667 cm³-346 in³)

Bore

99.009 mm

Stroke

92.0 mm

Compression Ratio

10.1:1

Firing Order

1-8-7-2-6-5-4-3

Cylinder layout, front to rear:

• Left-hand bank

1, 3. 5, and 7

• Right-hand bank

2, 4, 6, and 8

Spark Plug:

• Type

AC Delco 41-985

• Gap

1.02 +0.08/-0.07 mm

End Play

0.025-0.305 mm

Journal Diameter

54.99-55.04 mm

Journal Diameter Out-of-Round

0.025 mm (Maximum)

Lobe Lift:

• Intake

Except Coupe: 7.43 mm

Coupe: 6.96 mm

• Exhaust

Except Coupe: 7.43 mm

Coupe: 7.13 mm

Lobe Height (Wear Limits):

• Intake

Except Coupe: 46.67 mm

Coupe: 46.21 mm

• Exhaust

Except Coupe: 46.67 mm

Coupe: 46.37 mm

Runout (Measured at the Intermediate Journals)

0.050 mm

Timing Check (reference only) - Cam Lift at Top Dead Center:

• Exhaust Closing

Except Coupe: 0.062 mm

Coupe: 0.60 mm

• Intake Opening

Except Coupe: 0.15 mm

Coupe: 0.38 mm

Center to Center Length

154.90 ± 0.02mm

Width

24.00 ± 0.05 mm

Bearing Bore Diameter

56.505-56.525 mm

Bearing Bore Out-of-round (Production)

0.004 mm

Bearing Bore Out-of-round (Service Limit)

0.008 mm

Bearing Clearance (Production)

0.023-0.065 mm

Bearing Clearance (Service Limit)

0.023-0.076 mm

Side Clearance

0.110-0.510 mm

Twist

0.010 mm Maximum

Bend

0.02 mm Maximum

Stroke

92.00 ± 0.08 mm

End Play

0.040-0.200 mm

Connecting Rod Journal

0.065 mm

Bearing Clearance (Production)

0.023-0.065

Bearing Clearance (Service Limit)

0.023-0.076 mm

Diameter (Production)

53.318-53.338 mm

Diameter (Service Limit)

53.308 mm (Maximum)

Taper (Production)

0.005 mm (Maximum for 1/2 of the Journal Length)

Taper (Service Limit)

0.020 mm (Maximum)

Out-of-round (Production)

0.005 mm

Out-of-round (Service Limit)

0.010 mm Main Journal

Bearing Clearance (Production)

0.020-0.052 mm

Bearing Clearance (Service Limit)

0.020-0.065 mm

Diameter (Production)

64.993-65.007 mm

Diameter (Service Limit)

64.993 mm (Minimum)

Out-of-round (Production)

0.003 mm

Out-of-round (Service Limit)

0.008 mm

Taper (Production)

0.010 mm

Taper (Service Limit)

0.020 mm (Maximum)

Reluctor Ring Runout

0.700 mm (Maximum) (Measured 1.0 mm below Tooth Diameter)

Runout (at Rear Flange)

0.050 mm (Maximum)

Thrust Wall Runout

0.025 mm

Thrust Wall Width (Production)

26.22 mm

Thrust Wall Width (Service)

26.20 mm (Maximum)

Cylinder Bore Diameter

99.0-99.018 mm

Cylinder Bore Taper and Out-of-round

0.018 mm (Maximum)

Cylinder Block Deck Flatness

0.080 mm

(Measured within a 150 mm area)

0.100 mm

(Measured over Full Length of Cylinder Head)

Exhaust Manifold Deck Flatness

0.220 mm

Intake Manifold Deck Flatness

0.220 mm

Height

120.2 mm (Minimum)

(Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface)

Combustion Chamber Volume

66.67 ± 1.00 cc

Camshaft Bearing Bore Diameter

55.063-55.088 mm

Cylinder Head Deck Surface Flatness

0.080 mm

(Measured within a 150 mm area)

0.220 mm

(Measured over Full Length of the cylinder block deck)

Cylinder Head Deck Height

234.57-234.82 mm

(Measured from Crankshaft centerline to Deck Face)

Main Bearing Bore Diameter (Production)

69.871-69.889 mm

Valve Lifter Bore Dimension (Production)

21,417-21,443 mm

Main Bearing Bore Out-of-round

0.005 mm

Intake Manifold Cylinder Head Deck Flatness

0.50 mm

(Measured at Gasket Sealing Surfaces)

Oil Pan to Rear of Cylinder Block Alignment

0.000-0.250 mm

(Maximum at Transmission Housing Mounting Surface)

Front Cover Alignment

0.00-0.50 mm (at Oil Pan Surface)

Rear Cover Alignment

0.00-0.50 mm (at Oil Pan Surface)

Piston Outside Diameter (at Size Point & incl. coating)

98.995-99.027 mm

Piston Skirt, Dimensional Variation

0.032 mm (Maximum)

Piston to Bore Clearance (Production) Interference Clearance

0.027-0.023 mm

Piston to Bore Clearance (Service Limit) Interference Clearance

0.027-0.023 mm

Piston Pin Clearance to Piston Bore (Production)

0.008-0.016 mm

Pin Clearance to Piston Bore (Service Limit)

0.008-0.016 mm (Maximum)

Pin Diameter

23.997-24.0 mm

Pin Fit in Connecting Rod

0.020-0.043 mm (Interference)

Top Compression Ring End Gap (Production)

0.023-0.380 mm (Measured in Cylinder Bore)

2nd Compression Ring End Gap (Production)

0.440-0.640 mm (Measured in Cylinder Bore)

Oil Control Ring End Gap (Production)

0.180-0.690 mm (Measured in Cylinder Bore)

Top Compression Ring End Gap (Service)

0.230-0.380 mm (Maximum) (Measured in Cylinder Bore)

2nd Compression Ring End Gap (Service)

0.440-0.640 mm (Maximum) (Measured in Cylinder Bore)

Oil Control Ring End Gap (Service)

0.180-0690 mm (Maximum) (Measured in Cylinder Bore)

Top Compression Ring Groove Clearance (Production)

0.040-0.085 mm

2nd Compression Ring Groove Clearance (Production)

0.040-0.080 mm

Oil Control Ring Groove Clearance (Production)

0.010-0.220 mm

Top Compression Ring Groove Clearance (Service)

0.040-0.085 mm (Maximum)

2nd Compression Ring Groove Clearance (Service)

0.040-0.080 mm (Maximum)

Oil Control Ring Groove Clearance (Service Limit)

0.010-0.220 mm (Maximum)

Valve Lifter

Hydraulic Roller

Valve Rocker Arm Ratio

1.70:1

Valve Lash

No Adjustment

Valve Margin

1.25 Minimum

Valve Face Angle

45 degrees

Valve Seat Angel

46 degrees

Valve Seat Runout

0.050 mm (Maximum)

Width (Intake)

1.020 mm (Maximum)

Width (Exhaust)

1.780 mm (Maximum)

Valve Stem Clearance (Production Intake)

0.025-0.066 mm

Clearance (Production Exhaust)

0.025-0.066 mm

Clearance (Service Intake)

0.093 mm (Maximum)

Clearance (Service Exhaust)

0.093 mm (Maximum)

Diameter (Production)

7.955-7.976 mm

Diameter (Service)

7.96 mm (Minimum)

Free Length

52.9 mm

Pressure (Closed Valve)

340 N at 45.75 mm (Minimum)

Pressure (Open Valve)

980 N at 33.55 mm (Minimum)

Installed Height:

• Intake

45.75 mm

• Exhaust

45.75 mm

Valve Lift:

• Exhaust

12.11 mm

• Intake

11.83 mm

Valve Guide Installed Height (From Cylinder Head Spring Seat Surface to Top of the Valve Guide)

17.32

Coolant Sensor Threads

Loctite 565 or equivalent

Crankshaft Rear Oil Gallery Plug

Loctite 242 or equivalent

Cylinder Head Core Hole Plugs

Loctite 242 or equivalent

Cylinder Head Expansion Plugs

Loctite 242 or equivalent

Cylinder Head M8 Bolt Threads

Loctite 242 or equivalent

Cylinder Block Front Oil Gallery

Loctite 242 or equivalent

Cylinder Block Coolant Drain Plug Sealing Washers

Loctite 565 or equivalent

Engine Flywheel Bolt Threads

Loctite 242 or equivalent

Exhaust Manifold Bolt Threads

Loctite 272 or equivalent

Fuel Rail Bolt Threads

Loctite 242 or equivalent

Ignition Coil and Bracket Assembly Bolt Threads

Loctite 242 or equivalent

Intake Manifold Bolt Threads

Loctite 242 or equivalent

Oil Pan Surface at Front and Rear Covers

Loctite 565 or equivalent

Oil Pressure Sensor Threads

Loctite 565 or equivalent

Oil Transfer Tube Bolts and Stud Threads

Loctite 242 or equivalent

Oil Capacity:

Without Oil Filter Change

With Oil Filter Change

Except AWD

5.7 liters

6.2 liters

AWD

7.6 liters

8.0 liters

Minimum Oil Pressure (Hot)

45 kPa @ 1,000 RPM

125 kPa @ 2,000 RPM

165 kPa @ 4,000 RPM

Oil Type:

Initial Fill

Service Refill

5W -- 30 SJ GF4

5W -- 30 SJ GF3 or

10W -- 30 SJ GF3