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Engine Mechanical Specifications

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE MECHANICAL SPECIFICATIONS

Application Specification
Metric English
General
  Engine Type V-8
  Displacement 4.0 Liter 244 cu in
  RPO L47
  VIN C
  Bore 87 mm 3.4250 in
  Stroke 84 mm 3.3071 in
  Compression Ratio 10.0:1
  Engine Compression Test 965-1172 kPa 140-170 psi
  Firing Order 1-2-7-3-4-5-6-8
  Spark Plug Gap 1.270 mm 0.0500 in
Block
  Crankshaft Main Bearing Bore Diameter 72.430-72.442 mm 2.8516-2.8521 in
  Crankshaft Main Bearing Bore Out-of-Round 0.010 mm 0.0004 in
Crankshaft Main Rear Oil Seal
  Bore 115.962-116.038 mm 4.5654-4.5684 in
  Runout 0.250 mm 0.0098 in
  Cylinder Bore Diameter @ 41 mm (1.610 in) Below Deck Face 86.992-87.008 mm 3.4249-3.4255 in
  Cylinder Bore Out-of-Round
  Production 0.010 mm 0.0004 in
  Service 0.100 mm 0.0039 in
Cylinder Bore Taper
  Production 0.010 mm 0.0004 in
  Service 0.100 mm 0.0039 in
  Cylinder Head Deck Height 224.55 mm 8.8406 in
  Cylinder Head Deck Surface Flatness 0.100 mm 0.0039 in
  Camshaft
  Camshaft End Play 0.120-0.220 mm 0.0050-0.0087 in
  Camshaft Journal Diameter 26.948-26.972 mm 1.0610-1.0619 in
  Camshaft Journal Out-of-Round 0.006 mm 0.0002 in
  Camshaft Journal to Bore Clearance
  Production 0.051-0.076 mm 0.0020-0.0030 in
  Service 0.040-0.090 mm 0.0016-0.0035 in
  Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Exhaust 236 degrees
  Camshaft Lobe Duration @ 0.150 mm (0.006 in) Lift - Intake 242 degrees
  Camshaft Lobe Lift - Exhaust 5.94 mm 0.2339 in
  Camshaft Lobe Lift - Intake 6.15 mm 0.2421 in
  Camshaft Lobe Overlap @ 0.150 mm (0.006 in) Lift 1.98 degrees
  Camshaft Runout 0.050 mm 0.0020 in
  Camshaft Thrust Surface
  Runout 0.024 mm 0.0009 in
  Width 22.990-23.090 mm 0.9051-0.9091 in
  Camshaft Timing @ 0.150 mm (0.006 in) Lift
  Intake Opens 5.6 degrees
  Intake Centerline 113 degrees
  Intake Closes 236.8 degrees
  Exhaust Opens 222.5 degrees
  Exhaust Centerline 107 degrees
  Exhaust Closes 13.8 degrees
Cooling System
  Thermostat Full Open Temperature 85 degrees C 185 degrees F
Connecting Rod
  Connecting Rod Bearing Clearance
  Production and Service 0.0250-0.0760 mm 0.0010-0.0030 in
  Connecting Rod Bore Diameter - Bearing End 57.136-57.152 mm 2.2495-2.2501 in
  Connecting Rod Bore Diameter - Pin End - Early Design 21.002-21.016 mm 0.8268-0.8274 in
  Connecting Rod Bore Diameter - Pin End - Late Design 23.002-23.014 mm 0.9056-0.9061 in
  Connecting Rod Bore Out-of-Round - Bearing End 0.006 mm 0.0002 in
  Connecting Rod Bore Out-of-Round - Pin End 0.005 mm 0.0002 in
  Connecting Rod Length Center to Center 151.00 mm 5.9449 in
  Connecting Rod Side Clearance 0.200-0.500 mm 0.0079-0.0197 in
  Connecting Rod Straightness 0.050 mm 0.0020 in
Crankshaft
  Connecting Rod Journal Diameter 53.947-53.963 mm 2.1239-2.1245 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 43.840-43.960 mm 1.7260-1.7307 in
  Crankshaft Balancer
  Surface Diameter 50.730-50.870 mm 1.9972-2.0028 in
  Hub Inside Diameter 34.847-34.864 mm 1.3719-1.3726 in
  Crankshaft End Play 0.050-0.500 mm 0.0020-0.0197 in
  Crankshaft Main Bearing Clearance
  Production 0.0150-0.0550 mm 0.0006-0.0022 in
  Service 0.0150-0.0635 mm 0.0006-0.0025 in
  Crankshaft Main Journal Diameter 64.350-64.366 mm 2.5335-2.5341 in
  Crankshaft Main Journal Out-of-Round 0.005 mm 0.0002 in
  Crankshaft Main Journal Taper 0.005 mm 0.0002 in
  Crankshaft Main Journal Thrust Wall Runout 0.040 mm 0.0016 in
  Crankshaft Main Journal Thrust Wall Square 0.010 mm 0.0004 in
  Crankshaft Main Journal Width #1, #2, #4, #5 24.540-24.660 mm 0.9661-0.9709 in
  Crankshaft Main Journal Width, Thrust #3 25.150-25.250 mm 0.9902-0.9941 in
  Crankshaft Nose Diameter
  From Front Face 0.00-21.00 mm (0.0000-0.8268 in) 34.500-34.750 mm 1.3583-1.3681 in
  From Front Face 21.00-53.00 mm (0.8268-2.0866 in) 34.892-34.912 mm 1.3737-1.3745 in
  From Front Face 53.00 to Rolled Fillet (2.0866-Rolled Fillet) 33.450-33.550 mm 1.3169-1.3209 in
  From Front Face 89.94-110.54 mm (3.5409-4.3520 in) 44.950-45.000 mm 1.7697-1.7717 in
  Crankshaft Nose Runout
  From Front Face 0.00-21.00 mm (0.0000-0.8268 in) 0.100 mm 0.0039 in
  From Front Face 21.00-53.00 mm (0.8268-2.0866 in) 0.030 mm 0.0012 in
  From Front Face 53.00 to Rolled Fillet (2.0866-Rolled Fillet) 0.100 mm 0.0039 in
  From Front Face 89.94-110.54 mm (3.5409-4.3520 in) 0.025 mm 0.0010 in
  Crankshaft Rear Flange
  Diameter 95.880-95.980 mm 3.7748-3.7787 in
  Runout 0.025 mm 0.0010 in
  Crankshaft Rear Flange Face to Engine Flywheel Runout 0.025 mm 0.0010 in
  Crankshaft Runout
  Main Journals #1, #5 0.022 mm 0.0009 in
  Main Journals #2, #4, #6 0.025 mm 0.0010 in
Cylinder Head
  Camshaft Bearing Bore Diameter 27.013-27.033 mm 1.0635-1.0642 in
  Camshaft Bearing Bore Out-of-Round 0.010 mm 0.0004 in
  Combustion Chamber Depth - at Measurement Point 10.470-10.710 mm 0.4122-0.4217 in
  Cylinder Head Height - Deck to Camshaft Centerline Bore 136.00 mm 5.3543 in
  Surface Flatness - Block Deck 0.050 mm 0.0020 in
  Surface Flatness - Exhaust Manifold Deck 0.220 mm 0.0087 in
  Surface Flatness - Intake Manifold Deck 0.220 mm 0.0087 in
  Valve Guide Bore - Exhaust 5.969-5.989 mm 0.2350-0.2359 in
  Valve Guide Bore - Intake 5.969-5.989 mm 0.2350-0.2359 in
  Valve Guide Installed Height - Exhaust 14.300 mm 0.5630 in
  Valve Guide Installed Height - Intake 14.720 mm 0.5795 in
  Valve Lifter Bore Diameter 12.013-12.037 mm 0.4730-0.4739 in
Exhaust Manifold
Flywheel
  Runout 0.300 mm 0.0118 in
Intake Manifold
  Surface Flatness 0.500 mm 0.0200 in
Lubrication System
  Oil Capacity - with Filter 7.098 Liter 7.5 Quarts
  Oil Capacity - without Filter 6.625 Liter 7.0 Quarts
  Oil Pressure - Minimum @ Idle 35 kPa 5 psi
  Oil Pressure - Minimum @ 2,000 RPM 250 kPa 35 psi
Oil Pump
Piston Rings
  Piston Ring End Gap
  First Compression Ring 0.250-0.400 mm 0.0098-0.0157 in
  Second Compression Ring 0.350-0.050 mm 0.0138-0.0020 in
  Oil Control Ring 0.250-0.760 mm 0.0098-0.0299 in
  Piston Ring to Groove Clearance
  First Compression Ring 0.040-0.095 mm 0.0016-0.0037 in
  Second Compression Ring 0.040-0.095 mm 0.0016-0.0037 in
  Oil Control Ring None - Side Sealing
  Piston Ring Thickness
  First Compression Ring 1.199-1.203 mm 0.0472-0.0474 in
  Second Compression Ring 1.499-1.504 mm 0.0590-0.0592 in
  Oil Control Ring 2.530-2.555 mm 0.0996-0.1006 in
Pistons and Pins
  Piston
  Piston Diameter @ 42 mm (1.6353 in) below Crown 86.957-86.972 mm 3.4235-3.4241 in
  Piston Pin Bore Diameter - Early Design 21.003-21.008 mm 0.8269-0.8271 in
  Piston Pin Bore Diameter - Late Design 23.002-23.007 mm 0.9056-0.9058 in
  Piston Ring Groove Inside Diameter
  First Compression Ring 79.540-79.790 mm 3.1315-3.1413 in
  Second Compression Ring 77.270-77.520 mm 3.0421-3.0520 in
  Oil Control Ring 79.680-79.930 mm 3.1370-3.1468 in
  Piston Ring Groove Width
  First Compression Ring 1.230-1.255 mm 0.0484-0.0494 in
  Second Compression Ring 1.530-1.555 mm 0.0602-0.0612 in
  Oil Control Ring 2.530-2.555 mm 0.0996-0.1006 in
  Piston to Bore Clearance 0.020-0.051 mm 0.0008-0.0020 in
  Pin
  Piston Pin Clearance to Connecting Rod Bore 0.002-0.014 mm 0.0001-0.0006 in
  Piston Pin Clearance to Piston Pin Bore 0.002-0.012 mm 0.0001-0.0005 in
  Piston Pin Diameter - Early Design 20.995-21.000 mm 0.8266-0.8268 in
  Piston Pin Diameter - Late Design 22.995-23.000 mm 0.9053-0.9055 in
  Piston Pin End Play
  Piston Pin Length 61.500-62.000 mm 2.4213-2.4409 in
Starter
Valve System
  Valves
  Valve Face Angle 45 degrees
  Valve Face Runout 0.038 mm 0.0015 in
  Valve Face Width
  Exhaust 1.500 mm 0.0591 in
  Intake 1.000 mm 0.0394 in
  Valve Head Diameter
  Exhaust 27.880-28.140 mm 1.0976-1.7079 in
  Intake 34.090-34.350 mm 1.3421-1.3524 in
  Valve Length
  Exhaust 91.730-91.990 mm 3.6114-3.6217 in
  Intake 110.600-110.860 mm 4.3543-4.3646 in
  Valve Seat Angle 45.75 degrees
  Valve Seat Relief Angle 20 degrees
  Valve Seat Relief Width
  Exhaust 0.160-0.360 mm 0.0063-0.0142 in
  Intake 0.110-0.310 mm 0.0043-0.0118 in
  Valve Seat Runout 0.050 mm 0.0020 in
  Valve Seat Undercut Angle
  Exhaust 65 degrees
  Intake 60 degrees
  Valve Seat Width
  Exhaust 1.300-1.700 mm 0.0512-0.0669 in
  Intake 0.420-0.820 mm 0.0165-0.0323 in
  Valve Stem Diameter 5.920-5.940 mm 0.2331-0.2339 in
  Valve Stem Out-of-Round 0.008 mm 0.0003 in
  Valve Stem Straightness 0.013 mm 0.0005 in
  Valve Stem-to-Guide Clearance
  Exhaust
  Production 0.050-0.100 mm 0.0020-0.0039 in
  Service 0.050-0.120 mm 0.0020-0.0047 in
  Intake
  Production 0.028-0.068 mm 0.0011-0.0027 in
  Service 0.028-0.110 mm 0.0011-0.0043 in
  Valve Lifters
  Valve Lifter Diameter 11.986-12.000 mm 0.4719-0.4724 in
  Valve Lifter-to-Bore Clearance 0.037-0.041 mm 0.0015-0.0016 in
  Rocker Arms
  Valve Rocker Arm Ratio 1.68 to 1
  Valve Rocker Arm Roller Diameter 17.740-17.800 mm 0.6984-0.7008 in
  Valve Springs
  Valve Spring Coil Thickness 4.110 x 3.280 mm 0.1618 x 0.1291 in
  Valve Spring Diameter
  Inside 17.750-18.250 mm 0.6988-0.7185 in
  Outside 26.23 mm 1.0327 in
  Valve Spring Free Length 40.790-43.690 mm 1.6059-1.7201 in
  Valve Spring Height
  Closed 35.000 mm 1.3780 in
  Open 24.500 mm 0.9646 in
  Valve Spring Load
  Closed 211.4-233.4 N 47.5-52.4 lb
  Open 579.0-631.0 N 130.2-141.9 lb
  Valve Spring Total Number of Coils 6.90-7.10
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