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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> Engine Mechanical >> Engine Mechanical - 3.2L >> Specifications >> Engine Mechanical Specifications (LA3)

Engine Mechanical Specifications (LA3)

Engine Mechanical Specifications (LA3)

Application Specification
Metric English
General
  • Engine Type
 V6
  • Displacement
 3.2L
  • RPO
 LA3
  • VIN
 N
  • Bore
 87.5 mm 3.45 in
  • Stroke
 88 mm 3.47 in
  • Compression Ratio
 10.0:1
  • Engine Compression Test - Minimum
 690 kPa 100 psi
  • Firing Order
 1-2-3-4-5-6
  • Spark Plug Gap
 1.35 mm 0.053 in
Block
  • Crankshaft Main Bearing Bore Diameter
 72.000-72.013 mm 2.8347-2.83516 in
  • Crankshaft Main Bearing Bore Out-of-Round
 0.02 mm 0.0008 in
Cylinder Bore Diameter
  • Coefficient 8
 87.475-87.485 mm 3.4439-3.4443 in
  • Coefficient 99
 87.485-87.495 mm 3.4443-3.4447 in
  • Coefficient 00
 87.495-87.505 mm 3.4447-3.4451 in
  • Coefficient 01
 87.505-87.515 mm 3.4451-3.4455 in
  • Coefficient 02
 87.515-87.525 mm 3.4455-3.4459 in
  • Cylinder Bore Out-of-Round
 0.065 mm 0.0026 in
  • Cylinder Bore Taper
 0.0065 mm 0.0003 in
  • Cylinder Head Deck Height
 221 mm 8.700 in
  • Cylinder Head Deck Surface Flatness
 0.025 mm per 100 mm 0.0010 in per 3.917 in
Camshaft
  • Belt Deflection
 10 mm 0.394 in
  • Camshaft Journal Diameter
 27.939-27.960 mm 1.1000-1.1008 in
  • Camshaft Journal Out-of-Round
 0.04 mm 0.00158 in
  • Camshaft Journal to Bore Clearance
 0.009 mm 0.00035 in
  • Camshaft Lobe Lift - Exhaust
 10 mm 0.394 in
  • Camshaft Lobe Lift - Intake
 10 mm 0.394 in
  • Camshaft Runout
 0.04 mm 0.00158 in
Cooling System
  • Thermostat Full Open Temperature
 107°C 225°F
Connecting Rod
  • Connecting Rod Bearing Clearance
 0.021-0.061 mm 0.0008-0.0024 in
  • Connecting Rod Bore Diameter - Bearing End
 57.000-57.012 mm 2.2445-2.2446 in
  • Connecting Rod Bore Diameter - Pin End
 24.000-24.021 mm 0.9445-0.9457 in
  • Connecting Rod Bore Out-of-Round - Bearing End
 0.003 mm 0.0001 in
  • Connecting Rod Length
 148 mm 5.83 in
  • Connecting Rod Side Clearance
 0.07-0.028 mm 0.0027-0.0110 in
Crankshaft
  • Connecting Rod Journal Diameter
 67.980-67.996 mm 2.6764-2.6770 in
  • Connecting Rod Journal Out-of-Round
 0.03 mm 0.0012 in
  • Crankshaft End Play
 0.100-0.202 mm 0.0039-0.00795 in
  • Crankshaft Main Bearing Clearance
 0.014-0.043 mm 0.00055-0.00169 in
  • Crankshaft Main Journal Diameter
 67.980-67.746 mm 2.676-2.667 in
  • Crankshaft Main Journal Out-of-Round
 0.03 mm 0.00119 in
Cylinder Head
  • Cylinder Head Height/Thickness
 134 mm 5.28 in
  • Surface Flatness - Block Deck
 0.025 mm per 100 mm 0.0010 in per 3.917 in
  • Surface Flatness - Head
 0.025 mm per 100 mm 0.0010 in per 3.917 in
  • Surface Flatness - Exhaust Manifold Deck
 0.025 mm per 100 mm 0.0010 in per 3.917 in
  • Surface Flatness - Intake Manifold Deck
 0.025 mm per 100 mm 0.0010 in per 3.917 in
  • Valve Guide Installed Height
 13.7-14.0 mm 0.05394-0.05512 in
Exhaust Manifold
  • Surface Flatness
 0.025 mm per 100 mm 0.0010 in per 3.917 in
Flywheel
  • Pilot Bearing Installed Depth
 8.75-9.25 mm 0.3445-0.3641 in
Lubrication System
  • Oil Capacity - with Filter
 4.8L 5 Quarts
  • Oil Pressure - Minimum
 150 kPa 21.7 psi
Oil Pump
  • Inner Gear Tip Clearance
 0.08 mm 0.00026 in
  • Lobe Inner Diameter - Maximum
 0.10 mm 0.0039 in
Piston Rings
Piston Ring End Gap
  • First Compression Ring
 0.30-0.50 mm 0.0118-0.0196 in
  • Second Compression Ring
 0.30-0.50 mm 0.0118-0.0196 in
  • Oil Control Ring
 0.4-1.4 mm 0.00013-0.0551 in
Piston Ring to Groove Clearance
  • First Compression Ring
 0.02-0.06 mm 0.00079-0.0024 in
  • Second Compression Ring
 0.02-0.04 mm 0.00079-0.0024 in
  • Oil Control Ring
 0.02-0.04 mm 0.00079-0.0024 in
Piston Ring Thickness
  • First Compression Ring
 1.5 mm 0.0590 in
  • Second Compression Ring
 1.5 mm 0.0590 in
  • Oil Control Ring
 3.0 mm 0.1181 in
Pistons and Pins
Piston
  • Piston Diameter
  • Coefficient 8
 87.440-87.450 mm 3.4425-3.4429 in
  • Coefficient 99
 87.450-87.460 mm 3.4429-3.4433 in
  • Coefficient 00
 87.460-87.470 mm 3.4433-3.4437 in
  • Coefficient 01
 87.470-87.480 mm 3.4437-3.4441 in
  • Coefficient 02
 87.480-87.490 mm 3.4441-3.4445 in
  • Piston Pin Bore Diameter
 21.001-21.005 mm 0.8268-0.8270 in
  • Piston to Bore Clearance
 0.025-0.045 mm 0.0010-0.0018 in
Pin
  • Piston Pin Clearance to Connecting Rod Bore
 0.001-0.015 mm 0.0004-0.0006 in
  • Piston Pin Diameter
 20.990-21.000 mm 0.8264-0.8268 in
Valve System
Valves
  • Valve Face Angle
 90 degrees 40' +15'
  • Valve Face Runout
 0.03 mm 0.00118 in
  • Valve Head Diameter - Exhaust
 29 mm 1.14 in
  • Valve Head Diameter - Intake
 32 mm 1.23 in
  • Valve Installed Height
 39.2 mm 1.543 in
  • Valve Seat Angle
 90 degrees -30'
  • Valve Seat Runout
 0.05 mm 0.002 in
  • Valve Seat Width - Exhaust
 1.4-1.8 mm 0.0551-0.0708 in
  • Valve Seat Width - Intake
 1.0-1.4 mm 0.0394-0.0551 in
  • Valve Stem Diameter - Exhaust
 5.949-5.960 mm 0.2341-0.2346 in
  • Valve Stem Diameter - Intake
 5.955-5.970 mm 0.2345-0.2350 in
  • Valve Stem-to-Guide Clearance - Exhaust
 0.040-0.070 mm 0.0016-0.0028 in
  • Valve Stem-to-Guide Clearance - Intake
 0.030-0.060 mm 0.0012-0.0024 in
Valve Springs
  • Valve Spring Diameter - Inside
 20.2 mm 0.795 in
  • Valve Spring Diameter - Outside
 24.0 mm 0.9445 in
  • Valve Spring Free Length
 41.8 mm 1.65 in
  • Valve Spring Installed Height
 34 mm 1.34 in
  • Valve Spring Load - Closed
 270 N.m @ 34 mm 61 lb @ 1.34 in
  • Valve Spring Load - Open
 655 N.m @ 24 mm 147 lb @ 0.945 in
  • Valve Spring Total Number of Coils
 6.1
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