Sunday, February 21, 2010

GM 3.4L LA1 (3400) 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

0.9052-0.9054 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"


Torque Specifications For The LA1 and LG8


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


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