GM Service Manual Online
For 1990-2009 cars only

Fastener Tightening Specifications w/454 or 502

Application

Specification

Metric

English

* Torque Sequence Required -- Refer to Fastener Tightening Sequence .

Camshaft Retainer Bolt

14N·m

10 lb ft

Camshaft Sprocket Bolt

34N·m

25 lb ft

Connecting Rod Nut

95N·m

70 lb ft

Crankshaft Balancer Bolt

149N·m

110 lb ft

Crankshaft Bearing Cap Bolt and Stud

100N·m

135 lb ft

Crankshaft Rear Oil Seal Housing Nut/Bolt

11N·m

15 lb ft

Cylinder Head Bolts - Long/Short*

First Pass

34/27N·m

25/20 lb ft

Second Pass

68/54N·m

50/40 lb ft

Final Pass

102/88N·m

75/65 lb ft

Distributor Bolt

25N·m

18 lb ft

Engine Block Oil Gallery Plug

20N·m

15 lb ft

Engine Front Cover Bolt Screw

12N·m

106 lb in

Flywheel Bolt

90N·m

65 lb ft

Intake Manifold Bolt*

First Pass

14N·m

10 lb ft

Second Pass

34N·m

25 lb ft

Oil Filter Adapter Bolt

25N·m

18 lb ft

Oil Level Indicator Tube Bolt

12N·m

106 lb in

Oil Pan Assembly Bolt

25N·m

18 lb ft

Oil Baffle Nut

40N·m

30 lb ft

Oil Pan Drain Plug

20N·m

15 lb ft

Oil Pump Bolt To Rear Crankshaft Bearing Cap

90N·m

66 lb ft

Oil Pump Cover Bolt

12N·m

106 lb in

Rocker Arm Bolt

61N·m

45 lb ft

Spark Plug

30N·m

22 lb ft

Starter Motor Bolt

48N·m

35 lb ft

Valve Lifter Guide Retainer Bolt

25N·m

18 lb ft

Water Pump Bolt

40N·m

30 lb ft

Fastener Tightening Specifications w/572

Application

Specification

Metric

English

Notes

* Torque Sequence Required -- Refer to Fastener Tightening Sequence .

** For Cast Iron

Cam Sprocket Bolt

30N·m

65 lb ft

Apply Blue Loctite to thread

Cam Thrust Plate Bolt

88N·m

22 lb ft

Apply Blue Loctite to thread

Coolant plug, 3/4" NPT **

75N·m

55 lb ft

Apply Teflon Pipe Sealant to thread

Connecting Rod Nut

109N·m

80 lb ft

Apply 30 weight oil to thread

Cylinder Head *

95N·m

70 lb ft

Apply Moly-lube to thread

Damper Bolt

149N·m

110 lb ft

Apply Blue Loctite to thread

Flex Plate Bolt

88N·m

65 lb ft

Apply Blue Loctite to thread

Front Cover Bolt

14N·m

10 lb ft

Apply Blue Loctite to thread

Fuel Pump Cover Bolt

34N·m

25 lb ft

Apply Blue Loctite to thread

Galley Plug, 1/8" NPT **

20N·m

15 lb ft

Apply Teflon Pipe Sealant to thread

Galley Plug, 1/4" NPT **

27N·m

20 lb ft

Apply Teflon Pipe Sealant to thread

Galley Plug, 1/2" NPT **

54N·m

40 lb ft

Apply Teflon Pipe Sealant to thread

Lifter Retainer Bolt

24N·m

18 lb ft

Apply Blue Loctite to thread

Intake Manifold Bolt *

34N·m

25 lb ft

Apply Teflon Pipe Sealant to thread

Main Bolt (Inner/Outer) *

149N·m

110 lb ft

Apply 30 weight oil to thread

Oil Filter Adapter

68N·m

50 lb ft

Apply Blue Loctite to thread

Oil Pan Bolt

27N·m

20 lb ft

Apply Blue Loctite to thread

Oil Pump Bolt

88N·m

65 lb ft

Apply 30 weight oil to thread

Rocker Arm Stud

68N·m

50 lb ft

Apply Blue Loctite to thread

Rocker Cover Bolt

14N·m

10 lb ft

Apply 30 weight oil to thread

Spark Plug

34N·m

25 lb ft

Apply 30 weight oil to thread

Thermostat Housing

34N·m

25 lb ft

Apply Blue Loctite to thread

Valley Head Bolt

81N·m

60 lb ft

Apply Liquid Teflon to thread

Water Pump Bolt

41N·m

30 lb ft

Apply 30 weight oil to thread

Windage Tray Studs

41N·m

30 lb ft

Apply 30 weight oil to thread

Windage Tray Studs

149N·m

110 lb ft

Apply 30 weight oil to thread

Fastener Tightening Specifications wo/H383E, HT383, or ZZ383

Application

Specification

Metric

English

* Torque Sequence Required -- Refer to Fastener Tightening Sequence .

Camshaft Retainer Bolt

12N·m

106 lb in

Camshaft Sprocket Bolt

25N·m

18 lb ft

Connecting Rod Nut

27 + additional 55° (61N·m if no angle gauge is available)

.006 bolt stretch preferred 20 lb ft. + additional 55° (45 lb ft. if no angle gauge is available

Crankshaft Balancer Bolt

85N·m

63 lb ft

Crankshaft Balancer pulley

47N·m

35 lb ft

Crankshaft Bearing Cap Bolt and Stud

Inner 95N·m

Outer 88N·m

Inner 70 lb ft

Outer 65 lb ft

Crankshaft Rear Oil Seal Housing Nut/Bolt

15N·m

11 lb ft

Cylinder Head Bolt *

88N·m

65 lb ft

Distributor Bolt

34N·m

25 lb ft

Drain Plug

20N·m

15 lb ft

Engine Block Oil Gallery Plug

20N·m

15 lb ft

Engine Front Cover Bolt Screw

11N·m

97 lb in

Flywheel Bolt

88-90 N·m

65-70 lb ft

Intake Manifold Bolt Final Pass *

15N·m

11 lb ft

Oil Filter Adapter Bolt

24N·m

18 lb ft

Oil Level Indicator Tube Bolt

12N·m

106 lb in

Oil Pan Assembly Bolt

Corner 20N·mSide 11 N·m

Corner 15 lb ft

Side 97 lb in

Oil Baffle Nut

40N·m

30 lb ft

Oil Pan Drain Plug

20N·m

15 lb ft

Oil Pump Bolt To Rear Crankshaft Bearing Cap

90N·m

66 lb ft

Oil Pump Cover Bolt

9N·m

80 lb in

Spark Plug

20N·m (tapered seat)

15 lb ft

Starter Motor Bolt

48N·m

35 lb ft

Valve Lifter Guide Retainer Bolt

25N·m

18 lb ft

Water Pump Bolt

40N·m

30 lb ft

Fastener Tightening Specifications w/H383, ZZ383

Application

Specification

Metric

English

Notes

* Torque Sequence Required -- Refer to Fastener Tightening Sequence .

** For Cast Iron

*** For Aluminium

Camshaft Retainer Bolt

12N·m

106 lb in

Apply Blue Loctite to thread

Camshaft Sprocket Bolt

30N·m

22 lb ft

Apply Blue Loctite to thread

Connecting Rod Bolt

75N·m

55 lb ft

Apply 30 weight oil to thread

Carburetor Nut

First Pass

7 N·m

5 lb ft

Apply 30 weight oil to thread

Second Pass

14N·m

10 lb ft

-

Final Pass

88N·m

65 lb ft

-

Crankshaft Balancer Bolt

85N·m

63 lb ft

Apply Blue Loctite to thread

Crankshaft Balancer Pulley

47N·m

35 lb ft

Apply Blue Loctite to thread

Crankshaft Bearing Cap Bolt (inner)

95N·m

70 lb ft

Apply 30 weight oil to thread

Crankshaft Bearing Cap Bolt (outer)

88N·m

65 lb ft

Apply 30 weight oil to thread

Crankshaft Rear Oil Seal Housing Nut/Bolt

15N·m

11 lb ft

Apply 30 weight oil to thread

Cylinder Head Bolts * Re - torque bolt after running engine for 10 hours.

First Pass

34N·m

25 lb ft

Apply Teflon Pipe Sealant to thread

Second Pass

54N·m

40 lb ft

-

Final Pass

88N·m

65 lb ft

-

Distributor Bolt

34N·m

25 lb ft

None

Engine Block Oil Gallery Plugs

1/8" NPT **

20N·m

15 lb ft

Apply Teflon Pipe Sealant to thread

1/4" NPT **

27N·m

20 lb ft

Apply Teflon Pipe Sealant to thread

3/8" NPT ***

27N·m

20 lb ft

Apply Teflon Pipe Sealant to thread

1/2" NPT ***

34N·m

25 lb ft

Apply Teflon Pipe Sealant to thread

Engine Front Cover Bolt

11N·m

97 lb in

Apply Blue Loctite to thread

Flywheel Bolt

88-95 N·m

65-70 lb ft

Apply Blue Loctite to thread

Fuel Pump Cover

1/4" bolt

11N·m

97 lb in

Apply Blue Loctite to thread

3/8" bolt

40N·m

30 lb ft

Apply Blue Loctite to thread

Intake Manifold Bolt * Re - torque bolt after running engine for 10 hours.

First Pass

11N·m

97 lb in

Apply Teflon Pipe Sealant to thread

Final Pass

15N·m

11 lb ft

-

Oil Filter Adapter Bolt

24N·m

18 lb ft

Apply Blue Loctite to thread

Oil Level Indicator Tube Bolt

12N·m

106 lb in

Apply Blue Loctite to thread

Oil Pan Assembly Bolt

Corner nut/bolt

20N·m

15 lb ft

Apply Blue Loctite to thread

Side Rail Bolt

11N·m

97 lb in

-

Oil Pan Drain Plug

20N·m

15 lb ft

Apply 30 weight oil to thread

Oil Pump Bolt To Rear Crankshaft Bearing Cap

90N·m

66 lb ft

Apply 30 weight oil to thread

Oil Pump Cover Bolt

9N·m

80 lb in

Apply Blue Loctite to thread

Rocker Arm Stud

68N·m

50 lb ft

Apply Blue Loctite to thread

Rocker Cover Bolt

12N·m

106 lb in

Apply 30 weight oil to thread

Spark Plug

20N·m

15 lb ft

Apply 30 weight oil to thread

Starter Motor Bolt

48N·m

35 lb ft

Apply Blue Loctite to thread

Thermostat Housing Bolt

34N·m

25 lb ft

Apply Blue Loctite to thread

Valve Lifter Guide Retainer Bolt

24N·m

18 lb ft

Apply Blue Loctite to thread

Water Pump Bolt

40N·m

30 lb ft

Apply 30 weight oil to thread

Windage Tray Nut

40N·m

30 lb ft

Apply 30 weight oil to thread

Fastener Tightening Specifications w HT383E

Application

Specification

English

Metric

Notes

* Torque Sequence Required -- Refer to Fastener Tightening Sequence .

** For Cast Iron

*** ForAluminium

Camshaft Retainer Bolt

106 lb in

12N·m

Apply Blue Loctite to thread

Camshaft Sprocket Bolt

22 lb ft

30N·m

Apply Blue Loctite to thread

Connecting Rod Bolt

55 lb ft

75N·m

Apply 30 weight oil to thread

Crankshaft Balancer Bolt

63 lb ft

85N·m

Apply Blue Loctite to thread

Crankshaft Balancer Pulley

35 lb ft

47N·m

Apply Blue Loctite to thread

Crankshaft Bearing Cap Bolt (inner)

70 lb ft

95N·m

Apply 30 weight oil to thread

Crankshaft Bearing Cap Bolt (outer)

65 lb ft

88N·m

Apply 30 weight oil to thread

Crankshaft Rear Oil Seal Housing Nut/Bolt

11 lb ft

15N·m

Apply 30 weight oil to thread

Cylinder Head Bolts *

First Pass

25 lb ft

34N·m

Apply Teflon Pipe Sealant to thread

Second Pass

40 lb ft

54N·m

-

Final Pass

65 lb ft

88N·m

-

Distributor Bolt

25 lb ft

34N·m

None

Engine Block Oil Gallery Plugs

1/8" NPT **

15 lb ft

20N·m

Apply Teflon Pipe Sealant to thread

1/4" NPT **

20 lb ft

27N·m

Apply Teflon Pipe Sealant to thread

3/8" NPT ***

20 lb ft

27N·m

Apply Teflon Pipe Sealant to thread

1/2" NPT ***

25 lb ft

34N·m

Apply Teflon Pipe Sealant to thread

Engine Front Cover Bolt

97 lb in

11N·m

Apply Blue Loctite to thread

Flywheel Bolt

65-70 lb ft

88-95 N·m

Apply Blue Loctite to thread

Fuel Pump Cover

1/4" bolt

97 lb in

11N·m

Apply Blue Loctite to thread

3/8" bolt

30 lb ft

40N·m

Apply Blue Loctite to thread

Intake Manifold Bolts *

First Pass

27 lb in

3N·m

-

Second Pass

106 lb in

12N·m

-

Final Pass

11 lb ft

15N·m

-

Oil Filter Adapter Bolt

18 lb ft

24N·m

Apply Blue Loctite to thread

Oil Level Indicator Tube Bolt

106 lb in

12N·m

Apply Blue Loctite to thread

Oil Pan Assembly Bolt

Corner nut/bolt

15 lb ft

20N·m

Apply Blue Loctite to thread

Side Rail Bolt

97 lb in

11N·m

-

Oil Pan Drain Plug

15 lb ft

20N·m

Apply 30 weight oil to thread

Oil Pump Bolt To Rear Crankshaft Bearing Cap

66 lb ft

90N·m

Apply 30 weight oil to thread

Oil Pump Cover Bolt

80 lb in

9N·m

Apply Blue Loctite to thread

Rocker Arm Stud

50 lb ft

68N·m

Apply Blue Loctite to thread

Rocker Cover Bolt

106 lb in

12N·m

Apply 30 weight oil to thread

Spark Plug

15 lb ft

20N·m

Apply 30 weight oil to thread

Starter Motor Bolt

35 lb ft

48N·m

Apply Blue Loctite to thread

Thermostat Housing Bolt

25 lb ft

34N·m

Apply Blue Loctite to thread

Valve Lifter Guide Retainer Bolt

18 lb ft

24N·m

Apply Blue Loctite to thread

Water Pump Bolt

30 lb ft

40N·m

Apply 30 weight oil to thread

Windage Tray Nut

30 lb ft

40N·m

Apply 30 weight oil to thread