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Home >> Pontiac >> 2005 >> Aztek Base, AWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Mechanical - 3.4L >> Specifications >> Engine Mechanical Specifications
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Engine Mechanical Specifications

Engine Mechanical Specifications

Application Specification
Metric English
General Data
  • Engine Type
 60 degree V-6
  • Displacement
 3.4L 204 cu in
  • RPO
 LA1
  • VIN
 E
  • Bore
 92 mm 3.62 in
  • Stroke
 84 mm 3.31 in
  • Compression Ratio
 9.6:1
  • Firing Order
 1-2-3-4-5-6
  • Spark Plug Gap
 1.52 mm 0.60 in
Block
  • Camshaft Bearing Bore Diameter - Front and Rear
 51.03-51.08 mm 2.009-2.011 in
  • Camshaft Bearing Bore Diameter - Middle #2, #3
 50.77-50.82 mm 1.999-2.001 in
  • Crankshaft Main Bearing Bore Diameter
 72.1535-72.0695 mm 2.840-2.841 in
  • Crankshaft Main Bearing Bore Out-of-Round
 0.008 mm 0.00031 in
  • Cylinder Bore Diameter - Production
 92.020-92.038 mm 3.622-3.623 in
  • Cylinder Bore Diameter - Service
 92.020-92.038 mm 3.622-3.623 in
  • Cylinder Bore Out-of-Round - Diametral - Production
 0.020 mm 0.0008 in
  • Cylinder Bore Out-of-Round - Diametral - Service
 0.025 mm 0.001 in
  • Cylinder Bore Taper - Production
 0.020 mm 0.0008 in
  • Cylinder Bore Taper - Service
 0.025 mm 0.001 in
  • Cylinder Head Deck Height
 224 mm 8.818 in
  • Cylinder Head Deck Surface Flatness
 0.05 mm per 152 mm 0.0019 in per 6 in
  • Valve Lifter Bore Diameter
 21.417-21.455 mm 0.843-0.844 in
Camshaft
  • Camshaft Bearing Inside Diameter
 47.523-47.549 mm 1.871-1.872 in
  • Camshaft Journal Diameter
 47.45-47.48 mm 1.868-1.869 in
  • Camshaft Journal Out-of-Round
 0.025 mm 0.001 in
  • Camshaft Lobe Lift - Exhaust
 6.9263 mm 0.2727 in
  • Camshaft Lobe Lift - Intake
 6.9263 mm 0.2727 in
Cooling System
  • Capacity
 12.4 liters 13.1 quarts
  • Thermostat Full Open Temperature
 195 degrees
Connecting Rod
  • Connecting Rod Bearing Clearance
 0.18-0.062 mm 0.0007-0.017 in
  • Connecting Rod Bore Diameter
 53.962-53.978 mm 2.124-2.125 in
  • Connecting Rod Bore Out-of-Round
 0.008 mm 0.0002 in
  • Connecting Rod Length - Center to Center
 144.75-144.81 mm 5.69-5.70 in
  • Connecting Rod Side Clearance
 0.25-0.37 mm 0.010-0.015 in
Crankshaft
  • Connecting Rod Journal Diameter
 50.768-50.784 mm 1.9987-1.9994 in
  • Connecting Rod Journal Out-of-Round
 0.005 mm 0.0002 in
  • Connecting Rod Journal Taper
 0.005 mm 0.0002 in
  • Connecting Rod Journal Width
 21.92-22.08 mm 0.863-0.869 in
  • Crankshaft End Play
 0.060-0.210 mm 0.0024-0.0083 in
  • Crankshaft Main Bearing Journal Width
 23.9-24.1 mm 0.941-0.949 in
  • Crankshaft Main Bearing Clearance - Except #3
 0.019-0.064 mm 0.0008-0.0025 in
  • Crankshaft Main Bearing Clearance - #3 Thrust Bearing
 0.032-0.077 mm 0.0012-0.0030 in
  • Crankshaft Main Journal Diameter
 67.239-67.257 mm 2.6473-2.6483 in
  • Crankshaft Main Journal Out-of-Round
 0.005 mm 0.0002 in
  • Crankshaft Main Journal Taper
 0.005 mm 0.0002 in
  • Crankshaft Rear Flange Runout
 0.04 mm 0.0016 in
Cylinder Head
  • Combustion Chamber Depth - at Measurement Point
 2.2 mm 0.087 in
  • Surface Finish - Maximum
 2.8 RA
  • Surface Flatness - Block Deck
 0.08 mm per 152 mm 0.003 in per 6 in
  • Surface Flatness - Exhaust Manifold Deck
 0.1 mm 0.004 in
  • Surface Flatness - Intake Manifold Deck
 0.1 mm 0.004 in
  • Valve Guide Bore - Exhaust
 8.01 mm 0.315 in
  • Valve Guide Bore - Intake
 8.01 mm 0.315 in
  • Valve Guide Installed Height
 16.6 mm 0.654 in
Lubrication System
  • Oil Capacity - with Filter
 4.3 liters 4.5 quarts
  • Oil Capacity - without Filter
 3.8 liters 4.0 quarts
  • Oil Pressure - @ 1850 RPM
 414 kPa 60 psi
Oil Pump
  • Gear Diameter
 38.05-38.10 mm 1.498-1.500 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
  • Gears Lash
 0.094-0.195 mm 0.0037-0.0077 mm
  • Relief Valve-to-Bore Clearance
 0.038-0.089 mm 0.0015-0.0035 in
Piston Ring End Gap
  • First Compression Ring
 0.15-0.36 mm 0.006-0.014 in
  • Second Compression Ring
 0.48-0.74 mm 0.0188-0.0291 in
  • Oil Control Ring
 0.25-0.77 mm 0.0098-0.0303 in
Piston Ring to Groove Clearance
  • First Compression Ring
 0.04-0.086 mm 0.002-0.0033 in
  • Second Compression Ring
 0.04-0.08 mm 0.002-0.0031 in
  • Oil Control Ring
 0.07-0.095 mm 0.0028-0.0037 in
Piston Ring Thickness
  • First Compression Ring
 1.164-1.190 mm 0.046-0.047 in
  • Second Compression Ring
 1.460-1.490 mm 0.0574-0.0586 in
  • Oil Control Ring - Maximum
 2.960 mm 0.116 in
Piston
  • Piston Diameter - production - cylinder 1-4
 91.985-92.003 mm 3.621-3.622 in
  • Piston Diameter - service limit - cylinder 1-4
 91.945 mm 3.619 in
  • Piston Diameter - production - cylinder 5-6
 91.99-92.028 mm 3.621-3.623 in
  • Piston Diameter - service limit - cylinder 5-6
 91.945 mm 3.619 in
  • Piston Pin Bore Diameter
 23.005-23.010 mm 0.9057-0.9059 in
  • Piston Ring Groove Width - First
 1.23-1.25 mm 0.048-0.049 in
  • Piston Ring Groove Width - Second
 1.53-1.55 mm 0.060-0.061 in
  • Piston Ring Groove Width - Oil Control
 3.03-3.055 mm 0.119-0.120 in
  • Piston to Bore Clearance - production - 1-4
 0.17-0.053 mm 0.0006-0.0020 in
  • Piston to Bore Clearance - service limit- 1-4
 0.093 mm 0.0036 in
  • Piston to Bore Clearance - production - 5-6
 -0.008-0.048 mm -0.0003-0.0018 in
  • Piston to Bore Clearance - service limit- 5-6
 0.093 mm 0.0036 in
Pin
  • Piston Pin Clearance to Connecting Rod Bore - Press Fit
 -0.047 to -0.019 mm -0.0019 to -0.0007 in
  • Piston Pin Clearance to Piston Pin Bore
 0.008-0.016 mm 0.00031-0.00063 in
  • Piston Pin Diameter
 22.994-22.997 mm 0.9053-0.9054 in
Valves
  • Valve Face Angle
 45 degrees
  • Valve Seat Angle
 46 degrees
  • Valve Seat Depth - Intake - from deck face
 7.9-8.1 mm 0.311-0.318 in
  • Valve Seat Depth - Exhaust - from deck face
 8.9-9.1 mm 0.350-0.358 in
  • Valve Seat Runout
 0.037 mm 0.0015 in
  • Valve Seat Width - Intake
 1.55-1.80 mm 0.061-0.071 in
  • Valve Seat Width - Exhaust
 1.70-2.0 mm 0.067-0.079 in
  • Valve Stem-to-Guide Clearance
 0.026-0.068 mm 0.0010-0.0027 in
Valve Lifters/Push Rods
  • Push Rod Length - Intake
 146.0 mm 5.75 in
  • Push Rod Length - Exhaust
 152.5 mm 6.0 in
Valve Springs
  • Valve Spring Free Length
 48.5 mm 1.89 in
  • Valve Spring Installed Height
 43.2 mm 1.701 in
  • Valve Spring Load - Closed
 320 N @ 43.2 mm 75 lb @ 1.701 in
  • Valve Spring Load - Open
 1036 N @ 32 mm 230 lb @ 1.260 in
  • Valve Spring Total Number of Coils
 6.55
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