Engine Mechanical Specifications (LS6)

Application

Specification

Metric

English

General

  • Engine Type

V 8

  • Displacement

5.7 L - 5665 cc

346 CID

  • RPO

LS6

  • VIN

S

  • Bore

99.0-99.018 mm

3.897-3.898 in

  • Stroke

92.0 mm

3.622 in

  • Compression Ratio

10.5:1

  • Firing Order

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

  • Spark Plug Gap

1.016 mm

0.04 in

Block

  • Camshaft Bearing Bore 1 and 5 Diameter - First Design

59.08-59.13 mm

2.325-2.327 in

  • Camshaft Bearing Bore 2 and 4 Diameter - First Design

58.83-58.88 mm

2.316-2.318 in

  • Camshaft Bearing Bore 3 Diameter - First Design

58.58-58.63 mm

2.306-2.308 in

  • Camshaft Bearing Bore 1 and 5 Diameter - Second Design

59.58-59.63 mm

2.345-2.347 in

  • Camshaft Bearing Bore 2 and 4 Diameter - Second Design

59.08-59.13 mm

2.325-2.327 in

  • Camshaft Bearing Bore 3 Diameter - Second Design

58.58-58.63 mm

2.306-2.308 in

  • Crankshaft Main Bearing Bore Diameter

69.871-69.889 mm

2.75-2.751 in

  • Crankshaft Main Bearing Bore Out-of-Round

0.005 mm

0.0002 in

  • Cylinder Bore Diameter

99.0-99.018 mm

3.897-3.898 in

  • Cylinder Bore Taper - Thrust Side

0.018 mm

0.0007 in

  • Cylinder Head Deck Height - Measuring from the Centerline of Crankshaft to the Deck Face

234.57-234.82 mm

9.235-9.245 in

  • Cylinder Head Deck Surface Flatness - Measured Within a 152.4 mm (6.0 in) Area

0.08 mm

0.003 in

  • Cylinder Head Deck Surface Flatness - Measuring the Overall Length of the Block Deck

0.22 mm

0.008 in

  • Valve Lifter Bore Diameter

21.417-21.443 mm

0.843-0.844 in

Camshaft

  • Camshaft End Play

0.025-0.305 mm

0.001-0.012 in

  • Camshaft Journal Diameter

54.99-55.04 mm

2.164-2.166 in

  • Camshaft Journal Out-of-Round

0.025 mm

0.001 in

  • Camshaft Lobe Lift - Exhaust

8.19 mm

0.322 in

  • Camshaft Lobe Lift - Intake

8.24 mm

0.324 in

  • Camshaft Runout - Measured at the Intermediate Journals

0.05 mm

0.002 in

Connecting Rod

  • Connecting Rod Bearing Clearance - Production

0.023-0.065 mm

0.0009-0.0025 in

  • Connecting Rod Bearing Clearance - Service

0.023-0.076 mm

0.0009-0.003 in

  • Connecting Rod Bore Diameter - Bearing End

56.505-56.525 mm

2.224-2.225 in

  • Connecting Rod Bore Out-of-Round - Bearing End

0.006 mm

0.00023 in

  • Connecting Rod Bore Out-of-Round - Bearing End - Service

0.006 mm

0.00023 in

  • Connecting Rod Side Clearance

0.11-0.51 mm

0.00433-0.02 in

Crankshaft

  • Connecting Rod Journal Diameter - Production

53.318-53.338 mm

2.0991-2.0999 in

  • Connecting Rod Journal Diameter - Service

53.308 mm

2.0987 in

  • Connecting Rod Journal Out-of-Round - Production

0.005 mm

0.0002 in

  • Connecting Rod Journal Out-of-Round - Service

0.01 mm

0.0004 in

  • Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Production

0.005 mm

0.0002 in

  • Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Service

0.02 mm

0.00078 in

  • Crankshaft End Play

0.04-0.2 mm

0.0015-0.0078 in

  • Crankshaft Main Bearing Clearance - Production

0.02-0.052 mm

0.0008-0.0021 in

  • Crankshaft Main Bearing Clearance - Service

0.02-0.065 mm

0.0008-0.0025 in

  • Crankshaft Main Journal Diameter - Production

64.992-65.008 mm

2.558-2.559 in

  • Crankshaft Main Journal Diameter - Service

64.992 mm

2.558 in

  • Crankshaft Main Journal Out-of-Round - Production

0.003 mm

0.000118 in

  • Crankshaft Main Journal Out-of-Round - Service

0.008 mm

0.0003 in

  • Crankshaft Main Journal Taper - Production

0.01 mm

0.0004 in

  • Crankshaft Main Journal Taper - Service

0.02 mm

0.00078 in

  • Crankshaft Rear Flange Runout

0.05 mm

0.002 in

  • Crankshaft Reluctor Ring Runout - Measured 1.0 mm (0.04 in) Below Tooth Diameter

0.7 mm

0.028 in

  • Crankshaft Thrust Surface - Production

26.14-26.22 mm

1.029-1.0315 in

  • Crankshaft Thrust Surface - Service

26.22 mm

1.0315 in

  • Crankshaft Thrust Surface Runout

0.025 mm

0.001 in

Cylinder Head

  • Cylinder Head Height/Thickness - Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface

120.2 mm

4.732 in

  • Surface Flatness - Block Deck - Measured Within a 152.4 mm (6.0 in) Area

0.08 mm

0.003 in

  • Surface Flatness - Block Deck - Measuring the Overall Length of the Cylinder Head

0.1 mm

0.004 in

  • Surface Flatness - Exhaust Manifold Deck

0.22 mm

0.008 in

  • Surface Flatness - Intake Manifold Deck

0.22 mm

0.008 in

Intake Manifold

  • Surface Flatness - Measured at Gasket Sealing Surfaces

0.5 mm

0.02 in

Lubrication System

  • Oil Capacity - with Filter

6.151 Liters

6.5 Quarts

  • Oil Capacity - without Filter

5.678 Liters

6.0 Quarts

  • Oil Pressure - Minimum - Hot

41 kPa at 1,000 engine RPM

124 kPa at 2,000 engine RPM

165 kPa at 4,000 engine RPM

6 psig at 1,000 engine RPM

18 psig at 2,000 engine RPM

24 psig at 4,000 engine RPM

Oil Pan

  • Front Cover Alignment - at Oil Pan Surface

0.0-0.5 mm

0.0-0.02 in

  • Rear Cover Alignment - at Oil Pan Surface

0.0-0.5 mm

0.0-0.02 in

  • Oil Pan Alignment - to Rear of Engine Block at Transmission Bellhousing Mounting Surface

0.0-0.25 mm

0.0-0.01 in

Piston Rings

  • Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production

0.23-0.44 mm

0.009-0.017 in

  • Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore

0.23-0.5 mm

0.009-0.0196 in

  • Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production

0.44-0.7 mm

0.017-0.027 in

  • Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore

0.44-0.76 mm

0.0173-0.03 in

  • Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production

0.18-0.75 mm

0.007-0.029 in

  • Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service

0.18-0.81 mm

0.007-0.032 in

  • Piston Ring to Groove Clearance - First Compression Ring - Production

0.04-0.086 mm

0.00157-0.0033 in

  • Piston Ring to Groove Clearance - First Compression Ring - Service

0.04-0.068 mm

0.00157-0.0033 in

  • Piston Ring to Groove Clearance - Second Compression Ring - Production

0.05-0.088 mm

0.002-0.0034 in

  • Piston Ring to Groove Clearance - Second Compression Ring - Service

0.05-0.088 mm

0.002-0.0034 in

  • Piston Ring to Groove Clearance - Oil Control Ring - Production

-0.008 to +0.0176 mm

-0.0003 to +0.0069 in

  • Piston Ring to Groove Clearance - Oil Control Ring - Service

-0.008 to +0.0176 mm

-0.0003 to +0.0069 in

Pistons and Pins

  • Piston - Piston Diameter - Non Coated Skirt - at Size Point

98.969-98.987 mm

3.8964-3.8997 in

  • Piston - Piston Diameter - Measured Over Skirt Coating

98.984-99.027 mm

3.897-3.899 in

  • Piston - Piston to Bore Clearance - Non Coated Skirt - Production

0.013-0.049 mm

0.0005-0.0019 in

  • Piston - Piston to Bore Clearance - Non Coated Skirt - Service

0.013-0.074 mm

0.0005-0.0029 in

  • Piston - Piston to Bore Clearance - Coated Skirt - Production

-0.027 to +0.029 mm

-0.001 to +0.0011 in

  • Piston - Piston to Bore Clearance - Coating Worn Off - Service Limit

0.074 mm

0.0029 in

  • Pin - First Design Press Fit Pin Fit in Connecting Rod Bore

0.02-0.043 mm - Interference

0.00078-0.00169 in - Interference

  • Pin - First Design Press Fit Pin Clearance to Piston Pin Bore - Production

0.01-0.02 mm

0.0004-0.00078 in

  • Pin - First Design Press Fit Pin Clearance to Piston Pin Bore - Service

0.01-0.022 mm

0.0004-0.00086 in

  • Pin - First Design Press Fit Pin Diameter

23.997-24.0 mm

0.9447-0.9448 in

  • Pin - Second Design Full Floating Pin Fit in Connecting Rod Bore - Production

0.007-0.02 mm

0.00027-0.00078 in

  • Pin - Second Design Full Floating Pin Fit in Connecting Rod Bore - Service

0.007-0.022 mm

0.00027-0.00086 in

  • Pin - Second Design Full Floating Pin Clearance to Piston Pin Bore - Production

0.002-0.01 mm

0.00008-0.0004 in

  • Pin - Second Design Full Floating Pin Clearance to Piston Pin Bore - Service

0.002-0.015 mm

0.00008-0.0006 in

  • Pin - Second Design Full Floating Pin Diameter

23.952-23.955 mm

0.943-0.943 in

Valve System

  • Valves - Valve Face Angle

45 degrees

  • Valves - Valve Face Width

1.25 mm

0.05 in

  • Valves - Valve Lash

Net Lash - No Adjustment

  • Valves - Valve Lift - Intake

14.02 mm

0.552 in

  • Valves - Valve Lift - Exhaust

13.92 mm

0.548 in

  • Valves - Valve Seat Angle

46 degrees

  • Valves - Valve Seat Runout

0.05 mm

0.002 in

  • Valves - Valve Seat Width - Exhaust

1.78 mm

0.07 in

  • Valves - Valve Seat Width - Intake

1.02 mm

0.04 in

  • Valves - Valve Stem Diameter - Production

7.955-7.976 mm

0.313-0.314 in

  • Valves - Valve Stem Diameter - Service

7.96 mm

0.314 in

  • Valves - Valve Stem-to-Guide Clearance - Production - Intake

0.025-0.066 mm

0.001-0.0026 in

  • Valves - Valve Stem-to-Guide Clearance - Service - Intake

0.093 mm

0.0037 in

  • Valves - Valve Stem-to-Guide Clearance - Production - Exhaust

0.025-0.066 mm

0.001-0.0026 in

  • Valves - Valve Stem-to-Guide Clearance - Service - Exhaust

0.093 mm

0.0037 in

  • Valve Rocker Arm - Valve Rocker Arm Ratio

1.70:1

  • Valve Springs - Valve Spring Free Length

53.4 mm

2.1 in

  • Valve Springs - Valve Spring Installed Height

45.75 mm

1.8 in

  • Valve Springs - Valve Spring Load - Closed

400 N at 45.75 mm

90 lb at 1.8 in

  • Valve Springs - Valve Spring Load- Open

1310 N at 31.75 mm

294 lb at 1.25 in


Fastener Tightening Specifications

Application

Specification

Metric

English

Accessory Drive Belt Idler Pulley Bolt

50 N·m

37 lb ft

Accessory Drive Belt Tensioner Bolts

50 N·m

37 lb ft

Air Conditioning (A/C) Drive Belt Tensioner Bolt

50 N·m

37 lb ft

Camshaft Retainer Bolts

25 N·m

18 lb ft

Camshaft Sensor Bolt

25 N·m

18 lb ft

Camshaft Sprocket Bolts

35 N·m

26 lb ft

Clutch Housing to Oil Pan Bolts

50 N·m

37 lb ft

Connecting Rod Bolts - First Pass

20 N·m

15 lb ft

Connecting Rod Bolts - Final Pass

75 degrees

Coolant Temperature Gage Sensor

20 N·m

15 lb ft

Crankshaft Balancer Bolt - Installation Pass to Ensure the Balancer is Completely Installed

330 N·m

240 lb ft

Crankshaft Balancer Bolt - First Pass Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes

50 N·m

37 lb ft

Crankshaft Balancer Bolt - Final Pass

140 degrees

Crankshaft Bearing Cap Bolts - Inner Bolts - First Pass in Sequence

20 N·m

15 lb ft

Crankshaft Bearing Cap Bolts - Inner Bolts - Final Pass in Sequence

80 degrees

Crankshaft Bearing Cap Side Bolts

25 N·m

18 lb ft

Crankshaft Bearing Cap Studs - Outer Studs - First Pass in Sequence

20 N·m

15 lb ft

Crankshaft Bearing Cap Studs - Outer Studs - Final Pass in Sequence

53 degrees

Crankshaft Oil Deflector Nuts

25 N·m

18 lb ft

Crankshaft Position Sensor Bolt

25 N·m

18 lb ft

Cylinder Head Bolts - First Design - First Pass all M11 Bolts in Sequence

30 N·m

22 lb ft

Cylinder Head Bolts - First Design - Second Pass all M11 Bolts in Sequence

90 degrees

Cylinder Head Bolts - First Design - Final Pass all M11 Bolts in Sequence - Excluding the Medium Length Bolts at the Front and Rear of Each Cylinder Head

90 degrees

Cylinder Head Bolts - First Design - Final Pass M11 Medium Length Bolts at the Front and Rear of Each Cylinder Head

50 degrees

Cylinder Head Bolts - Second Design - First Pass all M11 Bolts in Sequence

30 N·m

22 lb ft

Cylinder Head Bolts - Second Design - Second Pass all M11 Bolts in Sequence

90 degrees

Cylinder Head Bolts - Second Design - Final Pass all M11 Bolts in Sequence

70 degrees

Cylinder Head Bolts - M8 Inner Bolts in Sequence

30 N·m

22 lb ft

Cylinder Head Coolant Plug

20 N·m

15 lb ft

Cylinder Head Core Hole Plug

20 N·m

15 lb ft

Engine Block Coolant Drain Plugs

60 N·m

44 lb ft

Engine Block Heater

40 N·m

30 lb ft

Engine Block Oil Gallery Plugs

60 N·m

44 lb ft

Engine Coolant Air Bleed Pipe and Cover Bolts and Studs

12 N·m

106 lb in

Engine Flywheel Bolts - First Pass

20 N·m

15 lb ft

Engine Flywheel Bolts - Second Pass

50 N·m

37 lb ft

Engine Flywheel Bolts - Final Pass

100 N·m

74 lb ft

Engine Front Cover Bolts

25 N·m

18 lb ft

Engine Mount Bracket to Engine Bolts

60 N·m

44 lb ft

Engine Mount Bracket to Frame Bolts

80 N·m

59 lb ft

Engine Mount Bracket to Frame Nuts

80 N·m

59 lb ft

Engine Mount Bracket to Frame Stud

25 N·m

19 lb ft

Engine Mount to Engine Mount Bracket Nuts

80 N·m

59 lb ft

Engine Rear Cover Bolts

30 N·m

22 lb ft

Engine Service Lift Bracket M10 Bolts

50 N·m

37 lb ft

Engine Service Lift Bracket M8 Bolt

25 N·m

18 lb ft

Engine Valley Cover Baffle Bolts

5 N·m

44 lb in

Engine Valley Cover Bolts

25 N·m

18 lb ft

Engine Wire Harness Ground Strap Bolt

32 N·m

24 lb ft

Exhaust Manifold Bolts - First Pass

15 N·m

11 lb ft

Exhaust Manifold Bolts - Final Pass

25 N·m

18 lb ft

Exhaust Manifold Heat Shield Bolts

9 N·m

80 lb in

Frame Mounting Bolts

191 N·m

141 lb ft

Fuel Injection Fuel Rail Bolts

10 N·m

89 lb in

Ignition Coil-to-Bracket Bolts

12 N·m

106 lb in

Ignition Coil Bracket-to-Valve Rocker Arm Cover Bolts

12 N·m

106 lb in

Intake Manifold Bolts - First Pass in Sequence

5 N·m

44 lb in

Intake Manifold Bolts - Final Pass in Sequence

10 N·m

89 lb in

Knock Sensors

20 N·m

15 lb ft

Oil Filter

30 N·m

22 lb ft

Oil Filter Fitting

55 N·m

40 lb ft

Oil Level Indicator Tube Bolt

16 N·m

12 lb ft

Oil Level Sensor

13 N·m

115 lb in

Oil Pan Baffle Bolts

12 N·m

106 lb in

Oil Pan Closeout Cover Bolt - Left Side

12 N·m

106 lb in

Oil Pan Closeout Cover Bolt - Right Side

12 N·m

106 lb in

Oil Pan Cover Bolts

12 N·m

106 lb in

Oil Pan Drain Plug

25 N·m

18 lb ft

Oil Pan M8 Bolts - Oil Pan-to-Engine Block and Oil Pan-to-Front Cover

25 N·m

18 lb ft

Oil Pan M6 Bolts - Oil Pan-to-Rear Cover

12 N·m

106 lb in

Oil Pressure Sensor

35 N·m

26 lb ft

Oil Pump-to-Engine Block Bolts

25 N·m

18 lb ft

Oil Pump Cover Bolts

12 N·m

106 lb in

Oil Pump Relief Valve Plug

12 N·m

106 lb in

Oil Pump Screen Nuts

25 N·m

18 lb ft

Oil Pump Screen-to-Oil Pump Bolt

12 N·m

106 lb in

Oil Temperature Sensor

20 N·m

15 lb ft

Shock Module Upper Mounting Bolts

112 N·m

83 lb ft

Spark Plugs - New Cylinder Heads

20 N·m

15 lb ft

Spark Plugs - all Subsequent Installations

15 N·m

11 lb ft

Throttle Body Bolts

12 N·m

106 lb in

Timing Chain Guide Bolts

35 N·m

26 lb ft

Valve Lifter Guide Bolts

12 N·m

106 lb in

Valve Rocker Arm Bolts

30 N·m

22 lb ft

Valve Rocker Arm Cover Bolts

12 N·m

106 lb in

Water Inlet Housing Bolts

15 N·m

11 lb ft

Water Pump Bolts - First Pass

15 N·m

11 lb ft

Water Pump Bolts - Final Pass

30 N·m

22 lb ft

Water Pump Cover Bolts

15 N·m

11 lb ft