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Engine Torque Specifications



Torque Specifications for GM 3.8L-231ci-V6



Balance Shaft Sprocket  To  Balance Shaft
16 Ft-Lbs
192 In-Lbs
21.69 N-m
Years: All
Note: 3800 II - Balance Shaft Gear Bolt - 2 Steps: 16FtLbs; +70deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Bell Housing Cover  To  Bell Housing
5 Ft-Lbs
60 In-Lbs
6.78 N-m
Years: All
Note: 3800 II - Torque Converter Cover Bolts
Type: Bolt Dim: Length: Head: Hexagon Grade:



Bracket/Stay  To  AC Compressor
74 Ft-Lbs
888 In-Lbs
100.33 N-m
Years: All
Note: 3800 II - A/C Compressor Mounting Bolts - FRONT NUTS
Type: Dim: Length: Head: Nut Grade:



Bracket/Stay  To  AC Compressor
59 Ft-Lbs
708 In-Lbs
79.99 N-m
Years: All
Note: 3800 II - A/C Compressor Mounting Bolts - LOWER BOLT
Type: Bolt Dim: Length: Head: Hexagon Grade:



Bracket/Stay  To  AC Compressor
23 Ft-Lbs
276 In-Lbs
31.18 N-m
Years: All
Note: 3800 II - A/C Compressor Mounting Bolts - REAR BRACKET
Type: Bolt Dim: Length: Head: Hexagon Grade:



Bracket/Stay  To  AC Compressor
36 Ft-Lbs
432 In-Lbs
48.81 N-m
Years: All
Note: 3800 II - A/C Compressor Mounting Bolts - UPPER BOLT
Type: Bolt Dim: Length: Head: Hexagon Grade:



Bracket/Stay  To  Alternator
36 Ft-Lbs
432 In-Lbs
48.81 N-m
Years: All
Note: 3800 II- Alternator Bracket to Alternator Thru Bolt
Type: Bolt Dim: Length: Head: Nut Grade:



Bracket/Stay  To  Cylinder Head
36 Ft-Lbs
432 In-Lbs
48.81 N-m
Years: All
Note: 3800 II - Alternator Bracket to Cylinder Head
Type: Bolt Dim: Length: Head: Hexagon Grade:



Bracket/Stay  To  Engine Block
70 Ft-Lbs
840 In-Lbs
94.91 N-m
Years: All
Note: 3800 II - FRONT Engine Mount Bracket to Engine Block
Type: Bolt Dim: Length: Head: Hexagon Grade:



Bracket/Stay  To  Intake Manifold
2.92 Ft-Lbs
35 In-Lbs
3.96 N-m
Years: All
Note: 3800 II - Throttle Cable Bracket
Type: Dim: Length: Head: Grade:



Camshaft Position Sensor  To  Timing Chain/Belt Cover
5 Ft-Lbs
60 In-Lbs
6.78 N-m
Years: All
Note: 3800 II - Camshaft Position Sensor
Type: Bolt Dim: Length: Head: Hexagon Grade:



Connecting Rod  To  Crankshaft
20 Ft-Lbs
240 In-Lbs
27.12 N-m
Years: All
Note: 3800 II - Rod Caps - 2 Steps: 20FtLbs; +50deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Crankshaft  To  Engine Block
30 Ft-Lbs
360 In-Lbs
40.67 N-m
Years: All
Note: 3800 II - Main Bearing CAP - 2 Steps: 30FtLbs; +110deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Crankshaft  To  Engine Block
11 Ft-Lbs
132 In-Lbs
14.91 N-m
Years: All
Note: 3800 II - Main Bearing SIDE - 2 Steps: 11FtLbs; +45deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Crankshaft Position Sensor  To  Timing Chain/Belt Cover
20 Ft-Lbs
240 In-Lbs
27.12 N-m
Years: All
Note: 3800 II - Crankshaft Position Sensor
Type: Bolt Dim: Length: Head: Hexagon Grade:



Crankshaft Position Sensor  To  Timing Chain/Belt Cover
3.33 Ft-Lbs
40 In-Lbs
4.52 N-m
Years: All
Note: 3800 II - Crankshaft Sensor Clamp Bolt
Type: Bolt Dim: Length: Head: Hexagon Grade:



Cylinder Head  To  Engine Block
37 Ft-Lbs
444 In-Lbs
50.17 N-m
Years: 1995-1998
Note: 3800 II - 3 Steps: 37FtLbs; +130deg; +30deg(Center 4 Only)
Type: Bolt Dim: Length: Head: Hexagon Grade:



Cylinder Head  To  Engine Block
37 Ft-Lbs
444 In-Lbs
50.17 N-m
Years: 1999-2005
Note: 3800 II - 2 Steps: 37FtLbs; +120deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Drain Plug  To  Engine Block
13 Ft-Lbs
156 In-Lbs
17.63 N-m
Years: All
Note: 3800 II - Engine Block/Coolant Plug
Type: Bolt Dim: Length: Head: Hexagon Grade:



Drain Plug  To  Oil Pan
18 Ft-Lbs
216 In-Lbs
24.4 N-m
Years: All
Note: 3800 II - Oil Drain Plug
Type: Bolt Dim: Length: Head: Hexagon Grade:



Drive Belt Tensioner  To  Engine Block
37 Ft-Lbs
444 In-Lbs
50.17 N-m
Years: All
Note: 3800 II - Accessory Drive Belt Tensioner
Type: Dim: Length: Head: Grade:



EGR Pipe  To  Exhaust Manifold
21 Ft-Lbs
252 In-Lbs
28.47 N-m
Years: All
Note: 3800 II - EGR Pipe to Exhaust Manifold
Type: Dim: Length: Head: Grade:



EGR Pipe  To  EGR Valve
22 Ft-Lbs
264 In-Lbs
29.83 N-m
Years: All
Note: 3800 II - EGR Pipe to EGR Valve
Type: Dim: Length: Head: Grade:



EGR Valve  To  EGR Valve Adapter
22 Ft-Lbs
264 In-Lbs
29.83 N-m
Years: All
Note: 3800 II - EGR Valve to Intake Manifold Adapter
Type: Dim: Length: Head: Grade:



EGR Valve Adapter  To  Intake Manifold
37 Ft-Lbs
444 In-Lbs
50.17 N-m
Years: All
Note: 3800 II - EGR Valve Adapter
Type: Dim: Length: Head: Grade:



Engine Block  To  Transaxle
55 Ft-Lbs
660 In-Lbs
74.57 N-m
Years: All
Note: 3800 II - Engine to Transaxle Bolts
Type: Bolt Dim: Length: Head: Hexagon Grade:



Engine Mount  To  Frame
50 Ft-Lbs
600 In-Lbs
67.79 N-m
Years: All
Note: 3800 II - FRONT Engine Mount to Frame Nuts
Type: Dim: Length: Head: Nut Grade:



Engine Mount  To  Bracket/Stay
32 Ft-Lbs
384 In-Lbs
43.39 N-m
Years: All
Note: 3800 II - FRONT Engine Mount to Engine Bracket Nuts
Type: Dim: Length: Head: Nut Grade:



Engine Temp Sensor  To  Intake Manifold
15 Ft-Lbs
180 In-Lbs
20.34 N-m
Years: All
Note: 3800 II - Coolant Temp Sensor
Type: Dim: Length: Head: Hexagon Grade:



Exhaust Manifold  To  Cylinder Head
8.83 Ft-Lbs
106 In-Lbs
11.98 N-m
Years: 1995-1998
Note: 3800 II - Exhaust Manifold to Cylinder Head
Type: Dim: Length: Head: Grade:



Exhaust Manifold  To  Cylinder Head
11 Ft-Lbs
132 In-Lbs
14.92 N-m
Years: 1999-2005
Note: 3800 II - Exhaust Manifold to Cylinder Head - FRONT 2
Type: Dim: Length: Head: Grade:



Exhaust Manifold  To  Cylinder Head
13 Ft-Lbs
156 In-Lbs
17.63 N-m
Years: 1999-2005
Note: 3800 II - Exhaust Manifold to Cylinder Head - NOT FRONT 2
Type: Stud Dim: Length: Head: Nut Grade:



Exhaust Pipe  To  Exhaust Manifold
18 Ft-Lbs
216 In-Lbs
24.4 N-m
Years: All
Note: 3800 II - Exhaust Pipe to Exhaust Manifold Nuts
Type: Dim: Length: Head: Nut Grade:



Exhaust Pipe  To  Exhaust System
15 Ft-Lbs
180 In-Lbs
20.34 N-m
Years: All
Note: 3800 II - Exhaust Crossover Bolt/Studs
Type: Dim: Length: Head: Grade:



Flywheel  To  Crankshaft
11 Ft-Lbs
132 In-Lbs
14.91 N-m
Years: All
Note: 3800 II - Flywheel/DrivePlate - 2 Steps: 11FtLbs; +50deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Fuel Pressure Regulator  To  Fuel Line
13 Ft-Lbs
156 In-Lbs
17.63 N-m
Years: All
Note: 3800 II - Fuel Pressure Regulator to Fuel Pipe Nut
Type: Dim: Length: Head: Nut Grade:



Fuel Pressure Regulator  To  Bracket/Stay
6.67 Ft-Lbs
80 In-Lbs
9.04 N-m
Years: All
Note: 3800 II - Fuel Pressure Regulator Mounting Screw
Type: Screw Dim: Length: Head: Grade:



Fuel Rail  To  Intake Manifold
7.42 Ft-Lbs
89 In-Lbs
10.06 N-m
Years: All
Note: 3800 II - Fuel Rail Mounting Bolts
Type: Bolt Dim: Length: Head: Hexagon Grade:



Idle Air Control Valve  To  Throttle Body
2.25 Ft-Lbs
27 In-Lbs
3.05 N-m
Years: All
Note: 3800 II - Idle Air Control Valve to Throttle Body
Type: Dim: Length: Head: Grade:



Intake Manifold  To  Cylinder Head
11 Ft-Lbs
132 In-Lbs
14.92 N-m
Years: All
Note: 3800 II - Intake Manifold to Cylinder Head Bolts/Nuts
Type: Bolt Dim: Length: Head: Nut Grade:



Intake Manifold Plenum  To  Intake Manifold
7.42 Ft-Lbs
89 In-Lbs
10.06 N-m
Years: All
Note: 3800 II - Intake Manifold (Upper) to Lower Manifold
Type: Dim: Length: Head: Grade:



Knock Sensor  To  Cylinder Head
14 Ft-Lbs
168 In-Lbs
18.98 N-m
Years: All
Note: 3800 II - Knock Sensor
Type: Bolt Dim: Length: Head: Hexagon Grade:



Oil Dip Stick  To  Engine Block
14 Ft-Lbs
168 In-Lbs
18.98 N-m
Years: All
Note: 3800 II - Oil Dip Stick Tube
Type: Dim: Length: Head: Grade:



Oil Filter Adapter  To  Timing Chain/Belt Cover
22 Ft-Lbs
264 In-Lbs
29.83 N-m
Years: 1995-1997
Note: 3800 II - Oil Filter Adapter to Timing Chain Cover Bolts
Type: Bolt Dim: Length: Head: Hexagon Grade:



Oil Filter Adapter  To  Timing Chain/Belt Cover
11 Ft-Lbs
132 In-Lbs
14.92 N-m
Years: 1998-2005
Note: 3800 II - Oil Filter Adapter - 2 Steps: 11FtLbs; +50deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Oil Pan  To  Engine Block
10.42 Ft-Lbs
125 In-Lbs
14.13 N-m
Years: All
Note: 3800 II - Oil Pan Bolts
Type: Bolt Dim: Length: Head: Hexagon Grade:



Oil Pickup Tube  To  Engine Block
11 Ft-Lbs
132 In-Lbs
14.92 N-m
Years: All
Note: 3800 II - Oil Pick Up Tube and Screen to Engine Block
Type: Bolt Dim: Length: Head: Hexagon Grade:



Oil Pump Cover  To  Timing Chain/Belt Cover
8.17 Ft-Lbs
98 In-Lbs
11.07 N-m
Years: All
Note: 3800 II - Use T-30 Torx Driver
Type: Screw Dim: Length: Head: Grade:



Oil Seal Retainer  To  Engine Block
18 Ft-Lbs
216 In-Lbs
24.4 N-m
Years: All
Note: 3800 II - Crankshaft Rear Oil Seal Housing Bolts
Type: Bolt Dim: Length: Head: Hexagon Grade:



Oxygen Sensor (Lambda)  To  Exhaust Pipe
31 Ft-Lbs
372 In-Lbs
42.03 N-m
Years: All
Note: 3800 II - Oxygen Sensor
Type: Dim: Length: Head: Hexagon Grade:



Plug  To  Engine Block
22 Ft-Lbs
264 In-Lbs
29.83 N-m
Years: All
Note: 3800 II - Oil Gallery Plugs
Type: Bolt Dim: Length: Head: Hexagon Grade:



Pulley  To  Water Pump
9.67 Ft-Lbs
116 In-Lbs
13.11 N-m
Years: All
Note: 3800 II - Water Pump Pulley Bolts
Type: Bolt Dim: Length: Head: Hexagon Grade:



Rocker Arm  To  Cylinder Head
11 Ft-Lbs
132 In-Lbs
14.91 N-m
Years: All
Note: 3800 II - Rocker Arm Pivot Bolts - 2 Steps: 11FtLbs; +90deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Spark Plug  To  Cylinder Head
15 Ft-Lbs
180 In-Lbs
20.34 N-m
Years: All
Note: 3800 II - Spark Plug
Type: Dim: Length: Head: Hexagon Grade:



Starter  To  Transaxle
32 Ft-Lbs
384 In-Lbs
43.39 N-m
Years: All
Note: 3800 II - Starter Motor
Type: Dim: Length: Head: Grade:



Supercharger  To  Intake Manifold
17 Ft-Lbs
204 In-Lbs
23.05 N-m
Years: All
Note: 3800/L67 - Supercharger to Lower Intake Manifold
Type: Dim: Length: Head: Grade:



Throttle Body  To  Intake Manifold
18 Ft-Lbs
216 In-Lbs
24.4 N-m
Years: All
Note: 3800 II - Throttle Body Bolts/Nuts
Type: Dim: Length: Head: Grade:



Thrust Plate  To  Engine Block
22 Ft-Lbs
264 In-Lbs
29.83 N-m
Years: All
Note: 3800 II - Balance Shaft Retainer
Type: Bolt Dim: Length: Head: Hexagon Grade:



Timing Chain/Belt Cover  To  Engine Block
11 Ft-Lbs
132 In-Lbs
14.92 N-m
Years: 1995-1998
Note: 3800 II - 2 Steps: 11FtLbs; +40deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Timing Chain/Belt Cover  To  Engine Block
15 Ft-Lbs
180 In-Lbs
20.34 N-m
Years: 1999-2005
Note: 3800 II - 2 Steps: 15FtLbs; +40deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Timing Chain/Belt Sprocket  To  Camshaft
74 Ft-Lbs
888 In-Lbs
100.33 N-m
Years: All
Note: 3800 II - Camshaft Sprocket - 2 Steps: 74FtLbs; +90deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Timing Chain/Belt Tensioner  To  Engine Block
16 Ft-Lbs
192 In-Lbs
21.69 N-m
Years: All
Note: 3800 II - Timing Chain Damper Bolt
Type: Bolt Dim: Length: Head: Hexagon Grade:



Torque Converter  To  Flexplate/Driveplate
46 Ft-Lbs
552 In-Lbs
62.37 N-m
Years: All
Note: 3800 II - Torque Converter to Flexplate
Type: Bolt Dim: Length: Head: Hexagon Grade:



Torque Strut  To  Bracket/Stay
37 Ft-Lbs
444 In-Lbs
50.17 N-m
Years: All
Note: 3800 II - Engine Torque Strut Mount Thru Bolts
Type: Bolt Dim: Length: Head: Nut Grade:



Valve Cover  To  Cylinder Head
7.42 Ft-Lbs
89 In-Lbs
10.06 N-m
Years: All
Note: 3800 II - Valve Cover Bolts
Type: Bolt Dim: Length: Head: Hexagon Grade:



Valve Lifter Guide  To  Engine Block
22 Ft-Lbs
264 In-Lbs
29.83 N-m
Years: All
Note: 3800 II - Valve Lifter Guide Bolts (4)
Type: Bolt Dim: Length: Head: Hexagon Grade:



Vibration Damper/Hub  To  Crankshaft
111 Ft-Lbs
1332 In-Lbs
150.5 N-m
Years: 1995-1998
Note: 3800 II - Crankshaft Balancer - 2 Steps: 111FtLbs; +76deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Vibration Damper/Hub  To  Crankshaft
111 Ft-Lbs
1332 In-Lbs
150.5 N-m
Years: 1999-2005
Note: 3800 II - Crankshaft Balancer - 2 Steps: 111FtLbs; +114deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Water Adapter/Connector  To  Intake Manifold
11 Ft-Lbs
132 In-Lbs
14.91 N-m
Years: All
Note: 3800 II - Heater Hose Adapter to Intake Manifold
Type: Dim: Length: Head: Grade:



Water Pump  To  Engine Block
15 Ft-Lbs
180 In-Lbs
20.34 N-m
Years: All
Note: 3800 II - LONG Bolts - 2 Steps: 15FtLbs; +40deg
Type: Bolt Dim: Length: Head: Hexagon Grade:



Water Pump  To  Engine Block
11 Ft-Lbs
132 In-Lbs
14.92 N-m
Years: All
Note: 3800 II - SHORT Bolts - 2 Steps: 11FtLbs; +80deg
Type: Bolt Dim: Length: Head: Hexagon Grade: