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Engine Mechanical Specifications (LA3)

WARNING: This page is about a different car, the 2003 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
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 .02 mm 0.0008 in
Cylinder Bore Diameter
  Coefficients 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 -
  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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