Automotive Engine Torque Specs


Torque Specifications for
GM 6.6L-402ci-V8

Bell Housing To Engine Block

30 Ft-Lbs

360 In-Lbs
40.67 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN3/8X16
Length:
Head: Hexagon
Grade:
Bell Housing Cover To Bell Housing

6.67 Ft-Lbs

80 In-Lbs
9.04 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN1/4X20
Length:
Head: Hexagon
Grade:
Connecting Rod To Crankshaft

50 Ft-Lbs

600 In-Lbs
67.79 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN3/8X24
Length:
Head: Nut
Grade:
Crankshaft To Engine Block

95 Ft-Lbs

1140 In-Lbs
128.8 N-m
Years: All
Note: Mark IV - 2 Bolt Main Bearing Caps
Type: Bolt
Dim: UN1/2X13
Length:
Head: Hexagon
Grade:
Crankshaft To Engine Block

105 Ft-Lbs

1260 In-Lbs
142.36 N-m
Years: All
Note: Mark IV - 4 Bolt Main Bearing Caps
Type: Bolt
Dim: UN1/2X13
Length:
Head: Hexagon
Grade:
Cylinder Head To Engine Block

80 Ft-Lbs

960 In-Lbs
108.47 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN7/16X14
Length:
Head: Hexagon
Grade:
Distributor Clamp To Engine Block

20 Ft-Lbs

240 In-Lbs
27.12 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN3/8X16
Length:
Head: Hexagon
Grade:
Drain Plug To Oil Pan

20 Ft-Lbs

240 In-Lbs
27.12 N-m
Years: All
Note: Mark IV - Oil Drain Plug
Type: Bolt
Dim: UN1/2X20
Length:
Head: Hexagon
Grade:
Engine Temp Sensor To Engine Block

20 Ft-Lbs

240 In-Lbs
27.12 N-m
Years: All
Note: Mark IV
Type:
Dim: UN1/2X14
Length:
Head:
Grade:
Exhaust Manifold To Cylinder Head

20 Ft-Lbs

240 In-Lbs
27.12 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN3/8X16
Length:
Head: Hexagon
Grade:
Flywheel To Crankshaft

65 Ft-Lbs

780 In-Lbs
88.13 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN7/16X20
Length:
Head: Hexagon
Grade:
Intake Manifold To Cylinder Head

30 Ft-Lbs

360 In-Lbs
40.67 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN3/8X16
Length:
Head: Hexagon
Grade:
Oil Pan To Engine Block

6.67 Ft-Lbs

80 In-Lbs
9.04 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN1/4X20
Length:
Head: Hexagon
Grade:
Oil Pan To Engine Block

11.25 Ft-Lbs

135 In-Lbs
15.26 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN5/16X18
Length:
Head: Hexagon
Grade:
Oil Pan To Timing Chain/Belt Cover

6.67 Ft-Lbs

80 In-Lbs
9.04 N-m
Years: 1970-1973
Note: Mark IV
Type: Bolt
Dim: UN1/4X20
Length:
Head: Hexagon
Grade:
Oil Pan To Timing Chain/Belt Cover

4.58 Ft-Lbs

55 In-Lbs
6.22 N-m
Years: 1974-
Note: Mark IV
Type: Bolt
Dim: UN1/4X20
Length:
Head: Hexagon
Grade:
Oil Pump To Engine Block

65 Ft-Lbs

780 In-Lbs
88.13 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN7/16X14
Length:
Head: Hexagon
Grade:
Oil Pump Cover To Oil Pump

6.67 Ft-Lbs

80 In-Lbs
9.04 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN1/4X20
Length:
Head: Hexagon
Grade:
Pressure Plate To Flywheel

35 Ft-Lbs

420 In-Lbs
47.45 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN3/8X16
Length:
Head: Hexagon
Grade:
Rocker Arm Stud To Cylinder Head

50 Ft-Lbs

600 In-Lbs
67.79 N-m
Years: All
Note: Mark IV
Type:
Dim: UN7/16X14
Length:
Head:
Grade:
Spark Plug To Cylinder Head

25 Ft-Lbs

300 In-Lbs
33.9 N-m
Years: 1970-1970
Note: Mark IV
Type:
Dim:
Length:
Head:
Grade:
Spark Plug To Cylinder Head

15 Ft-Lbs

180 In-Lbs
20.34 N-m
Years: 1971-
Note: Mark IV
Type:
Dim:
Length:
Head:
Grade:
Timing Chain/Belt Cover To Engine Block

6.67 Ft-Lbs

80 In-Lbs
9.04 N-m
Years: All
Note: Mark IV - Crankcase Front Cover
Type: Bolt
Dim: UN1/4X20
Length:
Head: Hexagon
Grade:
Timing Chain/Belt Sprocket To Camshaft

20 Ft-Lbs

240 In-Lbs
27.12 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN5/16X18
Length:
Head: Hexagon
Grade:
Valve Cover To Cylinder Head

4.17 Ft-Lbs

50 In-Lbs
5.65 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN1/4X20
Length:
Head: Hexagon
Grade:
Vibration Damper/Hub To Crankshaft

85 Ft-Lbs

1020 In-Lbs
115.24 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN1/2X20
Length:
Head: Hexagon
Grade:
Water Adapter/Connector To Intake Manifold

20 Ft-Lbs

240 In-Lbs
27.12 N-m
Years: 1970-1970
Note: Mark IV - Water Outlet
Type: Bolt
Dim: UN3/8X16
Length:
Head: Hexagon
Grade:
Water Adapter/Connector To Intake Manifold

30 Ft-Lbs

360 In-Lbs
40.67 N-m
Years: 1971-
Note: Mark IV
Type: Bolt
Dim: UN3/8X16
Length:
Head: Hexagon
Grade:
Water Pump To Engine Block

30 Ft-Lbs

360 In-Lbs
40.67 N-m
Years: All
Note: Mark IV
Type: Bolt
Dim: UN3/8X16
Length:
Head: Hexagon
Grade: