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3400 Engine Mechanical Specifications
Application
Specification
Metric
English General Data Engine Type
60° V-6 Displacement
3.4L
204 cu in RPO (VIN Code)
LA1 (E) Bore
92 mm
3.62 in Stroke
84 mm
3.31 in Deck Height
224 mm
8.818 in Compression Ratio
9.6:1 Firing Order
1-2-3-4-5-6 Oil Pressure - Warm
103 kPa
15 psi @ 1100 RPM Cylinder
Bore Diameter
92.019-92.037 mm
3.6228-3.6235 in Out Of Round Maximum
0.007 mm
0.0003 in Taper -- Thrust Side Maximum
0.010 mm
0.0004 in Piston Diameter-Gaged on the skirt 13 mm (0.51 in) below
the centerline of the piston pin bore
91.970-91.988 mm
3.6209-3.6216 in Clearance
0.032-0.068 mm
0.0013-0.0027 in Pin Bore
23.006-23.013 mm
0.9057-0.9060 in Piston Ring Top Groove Side Clearance
0.04-0.075 mm
0.002-0.0033 in Second Groove Side Clearance
0.04-0.09 mm
0.002-0.0035 in Top Ring Gap
0.15-0.36 mm
0.006-0.014 in Second Ring Gap
0.48-0.74 mm
0.0197-0.0280 in Oil Ring Groove Clearance
0.48-0.20 mm
0.008 in Gap with segment at 92.0 mm (3.62 in)
0.25-0.75 mm
0.0098-0.05 in Piston Pin Diameter
22.9915-22.9964 mm
0.0096-0.0215 mm
0.0004-0.0008 in Fit In Rod
(-)0.0469-(-)0.017 mm
press fit
0.0006-0.0018 in Crankshaft Main Journal Diameter
67.239-67.257 mm
2.6473-2.6483 in Main Journal Taper
0.005 mm
0.0002 in Out Of Round - Max
0.005 mm
0.0002 in Flange Runout - Max
0.04 mm
0.0016 in Cylinder Block Main Bearing Bore Diameter
72.155-72.168 mm
2.8407-2.8412 in Crankshaft Main Bearing Inside Diameter
67.289-67.316 mm
2.6492-2.6502 in Main Bearing Clearance
0.019-0.064 mm
0.0008-0.0025 in Main Thrust Bearing Clearance
0.032-0.077 mm
0.0012-0.0030 in Crankshaft End Play
0.060-0.210 mm
0.0024-0.0083 in Crankshaft Flange Runout - Max
0.04 mm
0.0016 in Connecting
Rod Rod Bearing Journal Diameter
50.768-50.784 mm
1.9987-1.9994 in Rod Bearing Journal Taper - Max
0.005 mm
0.0002 in Rod Bearing Journal Out Of Round - Max
0.005 mm
0.0002 in Rod Bearing Bore Diameter
53.962-53.984 mm
2.124-2.125 in Rod Inside Bearing Diameter
50.812-50.850 mm
2.000-2.002 in Rod Bearing Journal Clearance
0.018-0.062 mm
0.0007-0.0024 in Rod Side Clearance
0.18-0.44 mm
0.007-0.017 in Camshaft Lobe Lift (Intake and Exhaust)
6.9263 mm
0.2727 in Journal Diameter
47.45-47.48 mm
1.868-1.869 in Camshaft Bearing Bore Diameter-Front and Rear
51.03-51.08 mm
2.009-2.011 in Camshaft Bearing Bore Diameter-Middle #2 and #3
50.77-50.82 mm
1.999-2.001 in Camshaft Bearing Inside Diameter
47.523-47.549 mm
1.871-1.872 in Journal Clearance
0.026-0.101 mm
0.001-0.0039 in Journal Runout - Max
0.025 mm
0.001 in Valve System Roller Lifter
Hydraulic Rocker Arm Ratio
1.60:1 Valve Face Angle
45° Seat Angle
46° Valve Seat Runout
0.050 mm
0.002 in Seat Width-Intake
1.55-1.80 mm
0.061-0.071 in Seat Width-Exhaust
1.70-2.0 mm
0.067-0.079 in Valve Margin - Minimum Intake
2.10 mm
0.083 in Valve Margin - Minimum Exhaust
2.70 mm
0.106 in Valve Stem Clearance
0.026-0.068 mm
0.0010-0.0027 in Valve Spring Valve Springs Free Length
48.5 mm
1.89 in Valve Springs Load (Closed)
320 N @ 43.2 mm
75 lb @ 1.701 in Valve Springs Load (Open)
1036 N @ 32 mm
230 lb @ 1.260 in Installed Height Intake-Exhaust
43.2 mm
1.701 in Approx. # or coils
6.55 Oil Pump Gear Lash
0.094-0.195 mm
0.0037-0.0077 in Gear Pocket Depth
30.52-30.58 mm
1.202-1.204 in Gear Pocket Diameter
38.176-38.226 mm
1.503-1.505 in Oil Pump
Gear Length
30.45-30.48 mm
1.199-1.200 in Diameter
38.05-38.10 mm
1.498-1.500 in Side Clearance
0.038-0.088 mm
0.001-0.003 in End Clearance
0.040-0.125 mm
0.002-0.005 in Valve to Bore Clearance
0.038-0.089 mm
0.0015-0.0035 in Cylinder Head CC
28.6cc
Piston CC
28.6cc
Head Gasket Bore
3.750"
Head Gasket Thickness
.060"
Piston Deck Height
-.020"
Fastener Tightening Specifications (LG8 and LA1)
Application
Specification
Metric
English Accelerator Control
Cable Bracket Bolt/Nut
10 N·m
89 lb in Camshaft Position Sensor
Bolt
10 N·m
89 lb in Camshaft Sprocket Bolt
140 N·m
103 lb ft Camshaft Thrust Plate
Screw
10 N·m
89 lb in Connecting Rod Bearing
Cap Nut
20 N·m + 75°
15 lb ft + 75° Coolant Drain Plug
19 N·m
14 lb ft Coolant Temperature
Sensor
23 N·m
17 lb ft Crankshaft Balancer Bolt
103 N·m
76 lb ft Crankshaft Main Bearing
Cap Bolt/Stud
50 N·m +77°
37 lb ft + 77° Crankshaft Oil Deflector
Nut
25 N·m
18 lb ft Crankshaft Position
Sensor Bolt -- Front Cover
10 N·m
89 lb in Crankshaft Position
Sensor Stud -- Side of Engine Block
11 N·m
98 lb in Crankshaft Position
Sensor Wiring Bracket Bolt
27 N·m
20 lb ft Cylinder Head Bolt
60 N·m + 95°
44 lb ft + 95° Drive Belt Shield Bolt
10 N·m
89 lb in Drive Belt Tensioner
Bolt
50 N·m
37 lb ft EGR Valve to EGR Valve
Pipe Bolt
25 N·m
18 lb ft EGR Valve Adapter Pipe
to Exhaust Manifold Nut
25 N·m
18 lb ft Engine Flywheel Bolt
71 N·m
52 lb ft Engine Front Cover Bolt
-- Large
55 N·m
41 lb ft Engine Front Cover Bolt
-- Medium
47 N·m
35 lb ft Engine Front Cover Bolt
-- Small
21 N·m
15 lb ft Engine Mount Bracket
Bolt
58 N·m
43 lb ft Engine Mount Lower Nut
43 N·m
32 lb ft Engine Mount Strut and
Lift Bracket Bolt -- Engine Left Rear
70 N·m
52 lb ft Engine Mount Strut
Bolt/Nut
48 N·m
35 lb ft Engine Mount Strut
Bracket Bolt -- Upper Radiator Support
28 N·m
21 lb ft Engine Mount Strut
Bracket Bolt -- Vehicle Right Side
50 N·m
37 lb ft Engine Mount Upper Nut
47 N·m
35 lb ft Engine Oil Pressure
Indicator Switch
13 N·m
115 lb in Engine Wiring Harness
Bracket Bolt
13 N·m
115 lb in Exhaust Crossover Pipe
Heat Shield Bolt
10 N·m
89 lb in Exhaust Crossover Pipe
Nut/Stud
25 N·m
18 lb ft Exhaust Manifold Heat
Shield Bolt
10 N·m
89 lb in Exhaust Manifold Nut
16 N·m
12 lb ft Exhaust Manifold Stud
18 N·m
13 lb ft Fuel Feed Pipe to Fuel
Injector Rail Nut
17 N·m
13 lb ft Fuel Injector Rail Bolt
10 N·m
89 lb in Fuel Pipe Bracket
Bolt/Stud
50 N·m
37 lb ft Fuel Pipe Clip Bolt
8 N·m
71 lb in Fuel Return Pipe to Fuel
Injector Rail Nut
17 N·m
13 lb ft Generator Bracket and
Front Engine Lift Hook Bolt
50 N·m
37 lb ft Heated Oxygen Sensor
42 N·m
31 lb ft Heater Inlet Pipe Nut
25 N·m
18 lb ft Ignition Coil Bracket
Bolt/Nut/Stud
25 N·m
18 lb ft Intake Manifold Coolant
Pipe Bolt
10 N·m
89 lb in Knock Sensor
19 N·m
14 lb ft
Lower Intake Manifold
Bolt - Center
7 N·m
62 lb in
13 N·m
115 lb in
Lower Intake Manifold
Bolt - Corner
13 N·m
115 lb in
25 N·m
18 lb ft MAP Sensor Bolt
5 N·m
44 lb in Oil Cooler Connector
50 N·m
37 lb ft Oil Cooler Hose Fitting
19 N·m
14 lb ft Oil Cooler Pipe Bracket
Bolt
10 N·m
89 lb in Oil Filter
13 N·m
115 lb in Oil Filter Bypass Hole
Plug
19 N·m
14 lb ft Oil Filter Fitting
39 N·m
29 lb ft Oil Gallery Plug -- 1/4
inch
19 N·m
14 lb ft Oil Gallery Plug -- 3/8
inch
33 N·m
24 lb ft Oil Level Indicator Tube
Stud
25 N·m
18 lb ft Oil Level Sensor Bolt
10 N·m
89 lb in Oil Pan Bolt
25 N·m
18 lb ft Oil Pan Drain Plug
25 N·m
18 lb ft Oil Pan Side Bolt
50 N·m
37 lb ft Oil Pump Cover Bolt
10 N·m
89 lb in Oil Pump Drive Clamp
Bolt
36 N·m
27 lb ft Oil Pump Mounting Bolt
41 N·m
30 lb ft Spark Plug
20 N·m
15 lb ft
15 N·m
11 lb ft Thermostat Bypass Pipe
to Cylinder Head Nut
25 N·m
18 lb ft Thermostat Bypass Pipe
to Engine Front Cover Bolt
12 N·m
106 lb in Thermostat Bypass Pipe
to Throttle Body Nut
25 N·m
18 lb ft Throttle Body Bolt/Stud
25 N·m
18 lb ft Timing Chain Dampener
Bolt
21 N·m
15 lb ft Upper Intake Manifold
Bolt/Stud
25 N·m
18 lb ft Valve Lifter Guide Bolt
10 N·m
89 lb in Valve Rocker Arm Bolt
19 N·m + 30°
14 lb ft+ 30° Valve Rocker Arm Cover
Bolt
10 N·m
89 lb in Water Outlet Bolt
25 N·m
18 lb ft Water Pump Bolt
10 N·m
89 lb in Water Pump Pulley Bolt
25 N·m
18 lb ft
Application
Specification
Metric
English General Data Engine Type
60° V-6 Displacement
3.4L
204 cu in RPO (VIN Code)
LA1 (E) Bore
92 mm
3.62 in Stroke
84 mm
3.31 in Deck Height
224 mm
8.818 in Compression Ratio
9.6:1 Firing Order
1-2-3-4-5-6 Oil Pressure - Warm
103 kPa
15 psi @ 1100 RPM Cylinder
Bore Diameter
92.019-92.037 mm
3.6228-3.6235 in Out Of Round Maximum
0.007 mm
0.0003 in Taper -- Thrust Side Maximum
0.010 mm
0.0004 in Piston Diameter-Gaged on the skirt 13 mm (0.51 in) below
the centerline of the piston pin bore
91.970-91.988 mm
3.6209-3.6216 in Clearance
0.032-0.068 mm
0.0013-0.0027 in Pin Bore
23.006-23.013 mm
0.9057-0.9060 in Piston Ring Top Groove Side Clearance
0.04-0.075 mm
0.002-0.0033 in Second Groove Side Clearance
0.04-0.09 mm
0.002-0.0035 in Top Ring Gap
0.15-0.36 mm
0.006-0.014 in Second Ring Gap
0.48-0.74 mm
0.0197-0.0280 in Oil Ring Groove Clearance
0.48-0.20 mm
0.008 in Gap with segment at 92.0 mm (3.62 in)
0.25-0.75 mm
0.0098-0.05 in Piston Pin Diameter
22.9915-22.9964 mm
0.9052-0.9054 in Clearance In Piston
0.0096-0.0215 mm
0.0004-0.0008 in Fit In Rod
(-)0.0469-(-)0.017 mm
press fit
0.0006-0.0018 in Crankshaft Main Journal Diameter
67.239-67.257 mm
2.6473-2.6483 in Main Journal Taper
0.005 mm
0.0002 in Out Of Round - Max
0.005 mm
0.0002 in Flange Runout - Max
0.04 mm
0.0016 in Cylinder Block Main Bearing Bore Diameter
72.155-72.168 mm
2.8407-2.8412 in Crankshaft Main Bearing Inside Diameter
67.289-67.316 mm
2.6492-2.6502 in Main Bearing Clearance
0.019-0.064 mm
0.0008-0.0025 in Main Thrust Bearing Clearance
0.032-0.077 mm
0.0012-0.0030 in Crankshaft End Play
0.060-0.210 mm
0.0024-0.0083 in Crankshaft Flange Runout - Max
0.04 mm
0.0016 in Connecting
Rod Rod Bearing Journal Diameter
50.768-50.784 mm
1.9987-1.9994 in Rod Bearing Journal Taper - Max
0.005 mm
0.0002 in Rod Bearing Journal Out Of Round - Max
0.005 mm
0.0002 in Rod Bearing Bore Diameter
53.962-53.984 mm
2.124-2.125 in Rod Inside Bearing Diameter
50.812-50.850 mm
2.000-2.002 in Rod Bearing Journal Clearance
0.018-0.062 mm
0.0007-0.0024 in Rod Side Clearance
0.18-0.44 mm
0.007-0.017 in Camshaft Lobe Lift (Intake and Exhaust)
6.9263 mm
0.2727 in Journal Diameter
47.45-47.48 mm
1.868-1.869 in Camshaft Bearing Bore Diameter-Front and Rear
51.03-51.08 mm
2.009-2.011 in Camshaft Bearing Bore Diameter-Middle #2 and #3
50.77-50.82 mm
1.999-2.001 in Camshaft Bearing Inside Diameter
47.523-47.549 mm
1.871-1.872 in Journal Clearance
0.026-0.101 mm
0.001-0.0039 in Journal Runout - Max
0.025 mm
0.001 in Valve System Roller Lifter
Hydraulic Rocker Arm Ratio
1.60:1 Valve Face Angle
45° Seat Angle
46° Valve Seat Runout
0.050 mm
0.002 in Seat Width-Intake
1.55-1.80 mm
0.061-0.071 in Seat Width-Exhaust
1.70-2.0 mm
0.067-0.079 in Valve Margin - Minimum Intake
2.10 mm
0.083 in Valve Margin - Minimum Exhaust
2.70 mm
0.106 in Valve Stem Clearance
0.026-0.068 mm
0.0010-0.0027 in Valve Spring Valve Springs Free Length
48.5 mm
1.89 in Valve Springs Load (Closed)
320 N @ 43.2 mm
75 lb @ 1.701 in Valve Springs Load (Open)
1036 N @ 32 mm
230 lb @ 1.260 in Installed Height Intake-Exhaust
43.2 mm
1.701 in Approx. # or coils
6.55 Oil Pump Gear Lash
0.094-0.195 mm
0.0037-0.0077 in Gear Pocket Depth
30.52-30.58 mm
1.202-1.204 in Gear Pocket Diameter
38.176-38.226 mm
1.503-1.505 in Oil Pump
Gear Length
30.45-30.48 mm
1.199-1.200 in Diameter
38.05-38.10 mm
1.498-1.500 in Side Clearance
0.038-0.088 mm
0.001-0.003 in End Clearance
0.040-0.125 mm
0.002-0.005 in Valve to Bore Clearance
0.038-0.089 mm
0.0015-0.0035 in Cylinder Head CC
28.6cc
Piston CC
28.6cc
Head Gasket Bore
3.750"
Head Gasket Thickness
.060"
Piston Deck Height
-.020"
Fastener Tightening Specifications (LG8 and LA1)
Application
Specification
Metric
English Accelerator Control
Cable Bracket Bolt/Nut
10 N·m
89 lb in Camshaft Position Sensor
Bolt
10 N·m
89 lb in Camshaft Sprocket Bolt
140 N·m
103 lb ft Camshaft Thrust Plate
Screw
10 N·m
89 lb in Connecting Rod Bearing
Cap Nut
20 N·m + 75°
15 lb ft + 75° Coolant Drain Plug
19 N·m
14 lb ft Coolant Temperature
Sensor
23 N·m
17 lb ft Crankshaft Balancer Bolt
103 N·m
76 lb ft Crankshaft Main Bearing
Cap Bolt/Stud
50 N·m +77°
37 lb ft + 77° Crankshaft Oil Deflector
Nut
25 N·m
18 lb ft Crankshaft Position
Sensor Bolt -- Front Cover
10 N·m
89 lb in Crankshaft Position
Sensor Stud -- Side of Engine Block
11 N·m
98 lb in Crankshaft Position
Sensor Wiring Bracket Bolt
27 N·m
20 lb ft Cylinder Head Bolt
60 N·m + 95°
44 lb ft + 95° Drive Belt Shield Bolt
10 N·m
89 lb in Drive Belt Tensioner
Bolt
50 N·m
37 lb ft EGR Valve to EGR Valve
Pipe Bolt
25 N·m
18 lb ft EGR Valve Adapter Pipe
to Exhaust Manifold Nut
25 N·m
18 lb ft Engine Flywheel Bolt
71 N·m
52 lb ft Engine Front Cover Bolt
-- Large
55 N·m
41 lb ft Engine Front Cover Bolt
-- Medium
47 N·m
35 lb ft Engine Front Cover Bolt
-- Small
21 N·m
15 lb ft Engine Mount Bracket
Bolt
58 N·m
43 lb ft Engine Mount Lower Nut
43 N·m
32 lb ft Engine Mount Strut and
Lift Bracket Bolt -- Engine Left Rear
70 N·m
52 lb ft Engine Mount Strut
Bolt/Nut
48 N·m
35 lb ft Engine Mount Strut
Bracket Bolt -- Upper Radiator Support
28 N·m
21 lb ft Engine Mount Strut
Bracket Bolt -- Vehicle Right Side
50 N·m
37 lb ft Engine Mount Upper Nut
47 N·m
35 lb ft Engine Oil Pressure
Indicator Switch
13 N·m
115 lb in Engine Wiring Harness
Bracket Bolt
13 N·m
115 lb in Exhaust Crossover Pipe
Heat Shield Bolt
10 N·m
89 lb in Exhaust Crossover Pipe
Nut/Stud
25 N·m
18 lb ft Exhaust Manifold Heat
Shield Bolt
10 N·m
89 lb in Exhaust Manifold Nut
16 N·m
12 lb ft Exhaust Manifold Stud
18 N·m
13 lb ft Fuel Feed Pipe to Fuel
Injector Rail Nut
17 N·m
13 lb ft Fuel Injector Rail Bolt
10 N·m
89 lb in Fuel Pipe Bracket
Bolt/Stud
50 N·m
37 lb ft Fuel Pipe Clip Bolt
8 N·m
71 lb in Fuel Return Pipe to Fuel
Injector Rail Nut
17 N·m
13 lb ft Generator Bracket and
Front Engine Lift Hook Bolt
50 N·m
37 lb ft Heated Oxygen Sensor
42 N·m
31 lb ft Heater Inlet Pipe Nut
25 N·m
18 lb ft Ignition Coil Bracket
Bolt/Nut/Stud
25 N·m
18 lb ft Intake Manifold Coolant
Pipe Bolt
10 N·m
89 lb in Knock Sensor
19 N·m
14 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
13 N·m
115 lb in
-
Final Pass
25 N·m
18 lb ft MAP Sensor Bolt
5 N·m
44 lb in Oil Cooler Connector
50 N·m
37 lb ft Oil Cooler Hose Fitting
19 N·m
14 lb ft Oil Cooler Pipe Bracket
Bolt
10 N·m
89 lb in Oil Filter
13 N·m
115 lb in Oil Filter Bypass Hole
Plug
19 N·m
14 lb ft Oil Filter Fitting
39 N·m
29 lb ft Oil Gallery Plug -- 1/4
inch
19 N·m
14 lb ft Oil Gallery Plug -- 3/8
inch
33 N·m
24 lb ft Oil Level Indicator Tube
Stud
25 N·m
18 lb ft Oil Level Sensor Bolt
10 N·m
89 lb in Oil Pan Bolt
25 N·m
18 lb ft Oil Pan Drain Plug
25 N·m
18 lb ft Oil Pan Side Bolt
50 N·m
37 lb ft Oil Pump Cover Bolt
10 N·m
89 lb in Oil Pump Drive Clamp
Bolt
36 N·m
27 lb ft Oil Pump Mounting Bolt
41 N·m
30 lb ft Spark Plug
-
Spark Plug - Initial Installation
20 N·m
15 lb ft
-
Spark Plug - Reinstallation
15 N·m
11 lb ft Thermostat Bypass Pipe
to Cylinder Head Nut
25 N·m
18 lb ft Thermostat Bypass Pipe
to Engine Front Cover Bolt
12 N·m
106 lb in Thermostat Bypass Pipe
to Throttle Body Nut
25 N·m
18 lb ft Throttle Body Bolt/Stud
25 N·m
18 lb ft Timing Chain Dampener
Bolt
21 N·m
15 lb ft Upper Intake Manifold
Bolt/Stud
25 N·m
18 lb ft Valve Lifter Guide Bolt
10 N·m
89 lb in Valve Rocker Arm Bolt
19 N·m + 30°
14 lb ft+ 30° Valve Rocker Arm Cover
Bolt
10 N·m
89 lb in Water Outlet Bolt
25 N·m
18 lb ft Water Pump Bolt
10 N·m
89 lb in Water Pump Pulley Bolt
25 N·m
18 lb ft