Engine Mechanical Specifications. Generic Unit Repair 2002

For 1990-2009 cars only

Makes 🢒 Generic 🢒 2002 🢒 Unit Repair 🢒 Engine 🢒 Engine Mechanical - 5.0L and 5.7L 🢒 Engine Mechanical Specifications

Application	Specification
Application	Metric	English
General Data
Engine Type	V8
Displacement	5.7L	350 CID
RPO (VIN Code)	L31 (R)
Bore	101.63 mm	4.0012 in
Stroke	88.39 mm	3.480 in
Compression Ratio	9.4:1
Firing Order	1-8-4-3-6-5-7-2
Spark Plug Gap	1.52 mm	0.060 in
Oil Pressure (Minimum at Normal Operating Temperature)	42 kPa at 1,000 RPM 125 kPa at 2,000 RPM 166 kPa at 4,000 RPM	6 psig at 1,000 RPM 18 psig at 2,000 RPM 24 psig at 4,000 RPM
Camshaft
End Play	0.05-0.30 mm	0.002-0.012 in
Journal Diameter	47.440-47.490 mm	1.8677-1.8697 in
Journal Diameter Out-of-Round	0.025 mm (Maximum)	0.0010 in (Maximum)
Lobe Lift (Exhaust)	7.20-7.30 mm	0.283-0.287 in
Lobe Lift (Intake)	6.97-7.07 mm	0.274-0.278 in
Runout	0.065 mm (Maximum)	0.0026 in (Maximum)
Connecting Rod
Connecting Rod Bearing Clearance (Production)	0.033-0.078 mm	0.0013-0.0031 in
Connecting Rod Bearing Clearance (Service)	0.025-0.063 mm	0.0010-0.0025 in
Connecting Rod Journal Diameter	53.304-53.334 mm	2.0986-2.0998 in
Connecting Rod Journal Out-of-Round (Production)	0.007 mm (Maximum)	0.0003 in (Maximum)
Connecting Rod Journal Out-of-Round (Service)	0.025 mm (Maximum)	0.0010 in (Maximum)
Connecting Rod Journal Taper (Production)	0.007 mm (Maximum)	0.0003 in (Maximum)
Connecting Rod Journal Taper (Service)	0.025 mm (Maximum)	0.0010 in (Maximum)
Connecting Rod Side Clearance	0.15-0.68 mm	0.006-0.027 in
Crankshaft
Crankshaft Bearing Clearance (Journal #1--Production)	0.018-0.053 mm	0.0007-0.0021 in
Crankshaft Bearing Clearance (Journal #2, #3, and #4--Production)	0.030-0.068 mm	0.0012-0.0027 in
Crankshaft Bearing Clearance (Journal #5--Production)	0.020-0.060 mm	0.0008-0.0024 in
Crankshaft Bearing Clearance (Journal #1--Service)	0.025-0.051 mm	0.0010-0.0020 in
Crankshaft Bearing Clearance (Journal #2, #3, and #4--Service)	0.025-0.064 mm	0.0010-0.0025 in
Crankshaft Bearing Clearance Service (Journal #5--Service)	0.038-0.063 mm	0.0015-0.0025 in
Crankshaft End Play	0.05-0.20 mm	0.002-0.008 in
Crankshaft Journal Diameter (Journal #1)	62.189-62.212 mm	2.4484-2.4493 in
Crankshaft Journal Diameter (Journal #2, #3, and #4)	62.181-62.207 mm	2.4481-2.4491 in
Crankshaft Journal Diameter (Journal #5)	62.185-62.207 mm	2.4482-2.4491 in
Crankshaft Journal Out-of-Round (Production)	0.005 mm (Maximum)	0.0002 in (Maximum)
Crankshaft Journal Out-of-Round (Service)	0.025 mm (Maximum)	0.0010 in (Maximum)
Crankshaft Journal Taper (Production)	0.005 mm (Maximum)	0.0002 in (Maximum)
Crankshaft Journal Taper (Service)	0.025 mm (Maximum)	0.0010 in (Maximum)
Crankshaft Runout at Rear Flange	0.038 mm	0.0015 in
Cylinder Bore
Diameter	101.618-101.643 mm	4.0007-4.0017 in
Out-of-Round (Production)	0.025 mm	0.0010 in
Out-of-Round (Service)	0.05 mm	0.002 in
Taper (Production--Relief Side)	0.025 mm	0.0010 in
Taper (Production--Thrust Side)	0.012 mm	0.0005 in
Taper (Service Limit)	0.025 mm	0.0010 in
Cylinder Head
Surface Flatness (Engine Block Deck)	0.10 mm	0.004 in
Surface Flatness (Exhaust Manifold Deck)	0.05 mm	0.002 in
Surface Flatness (Intake Manifold Deck)	0.10 mm	0.004 in
Exhaust Manifold
Surface Flatness (Flange to Flange)	0.25 mm	0.010 in
Surface Flatness (Individual Flange)	0.05 mm	0.002 in
Piston
Piston Bore Clearance (Production)	0.018-0.053 mm	0.0007-0.002 in
Piston Bore Clearance (Service)	0.018-0.068 mm	0.0007-0.0026 in
Piston Pin
Clearance in Piston (Production)	0.013-0.023 mm	0.0005-0.0009 in
Clearance in Piston (Service)	0.013-0.025 mm	0.0005-0.0010 in
Diameter	23.545-23.548 mm	0.9270-0.9271 in
Interference Fit in Connecting Rod	0.021-0.040 mm	0.0008-0.0016 in
Piston Rings (End Gap Measured in Cylinder Bore)
Piston Compression Ring Gap (Production--Top Groove)	0.25-0.40 mm	0.098-0.015 in
Piston Compression Ring Gap (Production--2nd Groove)	0.46-0.66 mm	0.018-0.025 in
Piston Compression Ring Gap (Service--Top Groove)	0.25-0.50 mm	0.009-0.019 in
Piston Compression Ring Gap (Service--2nd Groove)	0.46-0.80 mm	0.018-0.031 in
Piston Compression Ring Groove Clearance (Production--Top Groove)	0.030-0.070 mm	0.0012-0.0027 in
Piston Compression Ring Groove Clearance (Production--2nd Groove)	0.040-0.080 mm	0.0015-0.003 in
Piston Compression Ring Groove Clearance (Service Limit--Top Groove)	0.030-0.090 mm	0.0012-0.0035 in
Piston Compression Ring Groove Clearance (Service Limit--2nd Groove)	0.040-0.100 mm	0.0015-0.0040 in
Piston Oil Ring Gap (Production)	0.25-0.76 mm	0.009-0.029 in
Piston Oil Ring Gap (Service)	0.25-0.90 mm	0.009-0.035 in
Piston Oil Ring Groove Clearance (Production)	0.046-0.096 mm	0.0018-0.0037 in
Piston Oil Ring Groove Clearance (Service)	0.046-0.100 mm	0.0018-0.0039 in
Valve System
Valve Face Angle	45 degrees
Valve Head Edge Margin	0.79 mm (Minimum)	0.031 in (Minimum)
Valve Lash	Rotate the Valve Rocker Arm Nut Clockwise 360 degrees (1 Turn) from Zero Lash
Valve Lifter	Hydraulic Roller
Valve Rocker Arm Ratio	1.5:1
Valve Seat Angle	46 degrees
Valve Seat Runout	0.05 mm (Maximum)	0.002 in (Maximum)
Valve Seat Width (Exhaust--Heavy Duty)	1.50-2.56 mm	0.059-0.101 in
Valve Seat Width (Exhaust--Light Duty)	1.65-2.49 mm	0.065-0.098 in
Valve Seat Width (Intake)	1.02-1.65 mm	0.040-0.065 in
Valve Spring Free Length	51.3 mm	2.02 in
Valve Spring Installed Height (Exhaust)	42.92-43.43 mm	1.67-1.70 in
Valve Spring Installed Height (Intake)	42.92-43.43 mm	1.67-1.70 in
Valve Spring Pressure (Closed)	338-374 N at 43.2	76-84 lb at 1.70
Valve Spring Pressure (Open)	832-903 N at 32.3	187-203 lb at 1.27
Valve Stem Clearance (Exhaust--Production)	0.025-0.069 mm	0.0010-0.0027 in
Valve Stem Clearance (Intake--Production)	0.025-0.069 mm	0.0010-0.0027 in
Valve Stem Clearance (Exhaust--Service)	0.025-0.094 mm	0.0010-0.0037 in
Valve Stem Clearance (Intake--Service)	0.025-0.094 mm	0.0010-0.0037 in
Valve Stem Diameter	8.661-8.679 mm	0.3410-0.3416 in
Valve Stem Oil Seal Installed Height (Measured from the Top of the Large Valve Guide Bevel to the Bottom of the Valve Stem Oil Seal)	1-2 mm	0.03937-0.07874 in