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Bart
Bart, GM Master tech
Category: Chevy
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What are the rocker arm bolts and valve cover torque spec ...

Customer Question

What are the rocker arm bolts and valve cover torque spec for a 1996 vortec 5.7 v.8?
Submitted: 9 years ago.
Category: Chevy
Expert:  Bart replied 9 years ago.

Valve System

  • Valve Face Angle

45 degrees

  • Valve Head Edge Margin

0.79 mm (Minimum)

0.031 in (Minimum)

  • Valve Lash

Rotate the Valve Rocker Arm Nut Clockwise 360 degrees (1 Turn) from Zero Lash

  • Valve Lifter

Hydraulic Roller

  • Valve Rocker Arm Ratio

1.5:1

  • Valve Seat Angle

46 degrees

  • Valve Seat Runout

0.05 mm (Maximum)

0.002 in (Maximum)

  • Valve Seat Width (Exhaust--Heavy Duty)

1.50-2.56 mm

0.059-0.101 in

  • Valve Seat Width (Exhaust--Light Duty)

1.65-2.49 mm

0.065-0.098 in

  • Valve Seat Width (Intake)

1.02-1.65 mm

0.040-0.065 in

  • Valve Spring Free Length

51.3 mm

2.02 in

  • Valve Spring Installed Height (Exhaust)

42.92-43.43 mm

1.67-1.70 in

  • Valve Spring Installed Height (Intake)

42.92-43.43 mm

1.67-1.70 in

  • Valve Spring Pressure (Closed)

338-374 N at 43.2

76-84 lb at 1.70

  • Valve Spring Pressure (Open)

832-903 N at 32.3

187-203 lb at 1.27

  • Valve Stem Clearance (Exhaust--Production)

0.025-0.069 mm

0.0010-0.0027 in

  • Valve Stem Clearance (Intake--Production)

0.025-0.069 mm

0.0010-0.0027 in

  • Valve Stem Clearance (Exhaust--Service)

0.025-0.094 mm

0.0010-0.0037 in

  • Valve Stem Clearance (Intake--Service)

0.025-0.094 mm

0.0010-0.0037 in

  • Valve Stem Diameter

8.661-8.679 mm

0.3410-0.3416 in

  • Valve Stem Oil Seal Installed Height (Measured from the Top of the Large Valve Guide Bevel to the Bottom of the Valve Stem Oil Seal)

1-2 mm

0.03937-0.07874 in


Document ID# XXXXX

Fastener Tightening Specifications (Unit Repair)

Application

N·m

Lb Ft

Lb In

Accelerator Control Cable Bracket Bolt and Nut

12

--

106

Air Conditioning (A/C) Compressor Mounting Bolt

50

37

--

Belt Idler Pulley Bolt

50

37

--

Camshaft Retainer Bolt

12

--

106

Camshaft Sprocket Bolt

25

18

--

Connecting Rod Nut

  • First Pass

27

20

--

  • Final Pass

55 degrees

Crankshaft Balancer Bolt

95

70

--

Crankshaft Bearing Cap Bolt and Stud (Preferred Method)

  • First Pass (Two Bolt Type Bearing Cap)

20

15

--

  • Final Pass (Two Bolt Type Bearing Cap)

73 degrees

  • First Pass (Four Bolt Type Bearing Cap)

20

15

--

  • Final Pass Outboard Bolt (Four Bolt Type Bearing Cap)

43 degrees

  • Final Pass Inboard Bolt and Stud (Four Bolt Type Bearing Cap)

73 degrees

Crankshaft Bearing Cap Bolt and Stud (Optional Method)

  • Two Bolt Type Bearing Cap

 

105

77

--

  • Inboard Bolt and Stud (Four Bolt Type Bearing Cap)

105

77

--

  • Outboard Bolt (Four Bolt Type Bearing Cap)

90

66

--

Crankshaft Oil Deflector Nut

40

29

--

Crankshaft Position Sensor Bolt

9

--

80

Crankshaft Pulley Bolt

58

43

--

Crankshaft Rear Oil Seal Housing Nut and Bolt

12

--

106

Crankshaft Rear Oil Seal Housing Retainer Stud

6

--

53

Cylinder Head Bolt (Preferred Method)

  • All Bolts First Pass in Sequence

30

22

--

  • Long Bolt Final Pass in Sequence

75 degrees

  • Medium Bolt Final Pass in Sequence

65 degrees

  • Short Bolt Final Pass in Sequence

55 degrees

Cylinder Head Bolt (Optional On-Vehicle Strategy)

  • First Pass in Sequence

35

26

--

  • Second Pass in Sequence

60

44

--

  • Final Pass in Sequence

90

66

--

Cylinder Head Core Hole Plug

20

15

--

Distributor Cap Bolt

2.4

--

21

Distributor Clamp Bolt

25

18

--

Drive Belt Tensioner

50

37

--

EGR Valve Bolt

  • First Pass

10

--

88

  • Final Pass

30

22

--

EGR Valve Pipe Nut at Intake Manifold

25

18

--

EGR Valve Pipe Nut at Exhaust Manifold

30

22

--

EGR Valve Pipe Clamp Bracket Bolt

25

18

--

Engine Block Coolant Drain Hole Plug

20

15

--

Engine Block Oil Gallery Plug

20

15

--

Engine Coolant Temperature (ECT) Gauge Sensor

20

15

--

Engine Flywheel Bolt

100

74

--

Engine Front Cover Bolt

12

--

106

Engine Lift Bracket Bolt (Special Tool J 41427)

15

11

--

Engine Lift Front Bracket Stud

35

26

--

Engine Mount Bolt (Through-bolt) to Engine Mount Bracket

95

70

--

Engine Mount Bolt to Frame

59

43

--

Engine Mount Bolt (Through-bolt) Nut

68

50

--

Engine Mount Bracket Bolt to Engine

51

38

--

Engine Mount Nut to Frame

45

33

--

Engine Oil Pressure Gauge Sensor Fitting

15

11

--

Engine Wiring Harness Bracket Nut

12

--

106

Exhaust Manifold Bolt

  • First Pass

15

11

--

  • Final Pass

30

22

--

Fan and Water Pump Pulley Bolt

25

18

--

Fuel Pipe Bracket Bolt

6

--

53

Fuel Pipe Retainer Nut

3

--

27

Fuel Pump Switch and Engine Oil Pressure Gauge Sensor

30

22

--

Generator and Drive Belt Tensioner Bracket Bolt and Nut to Engine

41

30

--

Generator and Drive Belt Tensioner Bracket Stud to Engine

20

15

--

Generator Mounting Bolt

50

37

--

Generator Mounting Rear Bracket Bolt to Generator and Drive Belt Tensioner Bracket

50

37

--

Ignition Coil Stud

12

--

106

Knock Sensor

20

15

--

Lower Intake Manifold Bolt

  • First Pass in Sequence

3

--

27

  • Second Pass in Sequence

12

--

106

  • Final Pass in Sequence

15

11

--

Oil Filter Adapter Bolt

25

18

--

Oil Level Indicator Tube Bolt

12

--

106

Oil Pan Drain Plug

25

18

--

Oil Pan Stud

6

--

53

Oil Pan Stud Nut

25

18

--

Oil Pan Bolt or Stud

12

--

106

Oil Pump Bolt to Rear Crankshaft Bearing Cap

90

66

--

Oil Pump Cover Bolt

12

--

106

Power Steering Pump Bolt

50

37

--

Power Steering Pump Bracket Bolt to Engine

41

30

--

Power Steering Pump Bracket Stud to Engine

20

15

--

Power Steering Pump Bracket Stud Nut

41

30

--

Power Steering Pump Nut to Engine

41

30

--

Power Steering Pump Rear Bracket Nut

50

37

--

Spark Plug

  • Initial Installation (NEW Cylinder Head)

30

22

--

  • All Subsequent Installations

15

11

--

Spark Plug Wire Support Bolt

12

--

106

Square Socket Plug (Engine Block Oil Gallery)

20

15

--

Starter Motor Bolt

40

29

--

Starter Motor Shield Bolt

3

--

27

Starter Motor Shield Nut

5

--

44

Transmission Cover Bolt

12

--

106

Upper Intake Manifold Bolt

  • First Pass in Sequence

5

--

44

  • Final Pass in Sequence

10

--

88

Valve Lifter Guide Retainer Bolt

25

18

--

Valve Rocker Arm Cover Bolt

12

--

106

Water Outlet Stud

25

18

--

Water Pump Bolt

45

33

--


Document ID# XXXXX
1996 Chevrolet Chevy C Pickup - 2WD