L92 Block Machining Specs
10-03-2007 | 10:56 AM
#1
L92 Block Machining Specs I did a search but it doesnt appear to be working correctly at the moment. Does anyone have the stock L92 machining specs? Line bore, cyl bore, deck height, cam height, etc? Line bore and deck height may be the same as a 6.0L but I dont know for sure. Thanks in advance, my local machine shop says its not in the system yet.
10-07-2007 | 03:13 PM
#4
Straight from GM Service Information:
Engine Mechanical Specifications (RPO L92 VIN 8)
Application
Specification
Metric
English
General
Engine Type
V8
Displacement
6.2L
376 CID
RPO
L92
VIN
8
Bore
103.241-103.259 mm
4.065-4.065 in
Stroke
92.0 mm
3.622 in
Compression Ratio
10.5:1
Firing Order
1-8-7-2-6-5-4-3
Active Fuel Management Cylinders - First Design Engine
1-4-6-7
Spark Plug Gap
1.02 mm
0.04 in
Block
Camshaft Bearing Bore 1 and 5 Diameter
59.58-59.63 mm
2.345-2.347 in
Camshaft Bearing Bore 2 and 4 Diameter
59.08-59.13 mm
2.325-2.327 in
Camshaft Bearing Bore 3 Diameter
58.58-58.63 mm
2.306-2.308 in
Crankshaft Main Bearing Bore Diameter
69.871-69.889 mm
2.75-2.751 in
Crankshaft Main Bearing Bore Out-of-Round
0.006 mm
0.0002 in
Cylinder Bore Diameter
103.241-103.259 mm
4.065-4.065 in
Cylinder Head Deck Height - Measuring from the Centerline of Crankshaft to the Deck Face
234.57-234.82 mm
9.235-9.245 in
Cylinder Head Deck Surface Flatness - Measured Within a 152.4 mm (6.0 in) Area
0.11 mm
0.004 in
Cylinder Head Deck Surface Flatness - Measuring the Overall Length of the Block Deck
0.22 mm
0.008 in
Valve Lifter Bore Diameter
21.417-21.443 mm
0.843-0.844 in
Camshaft
Camshaft End Play
0.025-0.305 mm
0.001-0.012 in
Camshaft Journal Diameter
54.99-55.04 mm
2.164-2.166 in
Camshaft Journal Out-of-Round
0.025 mm
0.001 in
Camshaft Lobe Lift - Exhaust - Non Active Fuel Management Cylinders
7.48 mm
0.294 in
Camshaft Lobe Lift - Exhaust - Active Fuel Management Cylinders
7.61 mm
0.300 in
Camshaft Lobe Lift - Intake - Non Active Fuel Management Cylinders
7.48 mm
0.294 in
Camshaft Lobe Lift - Intake - Active Fuel Management Cylinders
7.61 mm
0.300 in
Camshaft Runout - Measured at the Intermediate Journals
0.05 mm
0.002 in
Connecting Rod
Connecting Rod Bearing Clearance - Production
0.023-0.065 mm
0.0009-0.0025 in
Connecting Rod Bearing Clearance - Service
0.023-0.076 mm
0.0009-0.003 in
Connecting Rod Bore Diameter - Bearing End
56.505-56.525 mm
2.224-2.225 in
Connecting Rod Bore Out-of-Round - Bearing End - Production
0.004-0.008 mm
0.00015-0.0003 in
Connecting Rod Bore Out-of-Round - Bearing End - Service
0.004-0.008 mm
0.00015-0.0003 in
Connecting Rod Side Clearance
0.11-0.51 mm
0.00433-0.02 in
Crankshaft
Connecting Rod Journal Diameter - Production
53.318-53.338 mm
2.0991-2.0999 in
Connecting Rod Journal Diameter - Service
53.308 mm
2.0987 in
Connecting Rod Journal Out-of-Round - Production
0.005 mm
0.0002 in
Connecting Rod Journal Out-of-Round - Service
0.01 mm
0.0004 in
Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Production
0.005 mm
0.0002 in
Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Service
0.02 mm
0.00078 in
Crankshaft End Play
0.04-0.2 mm
0.0015-0.0078 in
Crankshaft Main Bearing Clearance - Production
0.02-0.052 mm
0.0008-0.0021 in
Crankshaft Main Bearing Clearance - Service
0.02-0.065 mm
0.0008-0.0025 in
Crankshaft Main Journal Diameter - Production
64.992-65.008 mm
2.558-2.559 in
Crankshaft Main Journal Diameter - Service
64.992 mm
2.558 in
Crankshaft Main Journal Out-of-Round - Production
0.003 mm
0.000118 in
Crankshaft Main Journal Out-of-Round - Service
0.008 mm
0.0003 in
Crankshaft Main Journal Taper - Production
0.01 mm
0.0004 in
Crankshaft Main Journal Taper - Service
0.02 mm
0.00078 in
Crankshaft Rear Flange Runout
0.05 mm
0.002 in
Crankshaft Reluctor Ring Runout - Measured 1.0 mm (0.04 in) Below Tooth Diameter
0.7 mm
0.028 in
Crankshaft Thrust Surface - Production
26.14-26.22 mm
1.029-1.0315 in
Crankshaft Thrust Surface - Service
26.22 mm
1.0315 in
Crankshaft Thrust Surface Runout
0.025 mm
0.001 in
Cylinder Head
Cylinder Head Height/Thickness - Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface
120.2 mm
4.732 in
Surface Flatness - Block Deck - Measured Within a 152.4 mm (6.0 in) Area
0.08 mm
0.003 in
Surface Flatness - Block Deck - Measuring the Overall Length of the Cylinder Head
0.1 mm
0.004 in
Surface Flatness - Exhaust Manifold Deck
0.13 mm
0.005 in
Surface Flatness - Intake Manifold Deck
0.08 mm
0.0031 in
Valve Guide Installed Height - Measured from the Spring Seat Surface to the Top of the Guide
17.32 mm
0.682 in
Intake Manifold
Surface Flatness - Measured at Gasket Sealing Surfaces and Measured Within a 200 mm (7.87 in) Area that Includes 2 Runner Port Openings
0.3 mm
0.118 in
Lubrication System
Oil Capacity - with Filter
5.68 liters
6.0 quarts
Oil Capacity - without Filter
5.20 liters
5.5 quarts
Oil Pressure - Minimum - Hot
41 kPa at 1,000 engine RPM
124 kPa at 2,000 engine RPM
165 kPa at 4,000 engine RPM
6 psig at 1,000 engine RPM
18 psig at 2,000 engine RPM
24 psig at 4,000 engine RPM
Active Fuel Management Relief Valve Oil Pressure - as Measured at Oil Pressure Sensor Location
379-517 kPa
Maximum
55-75 psig
Maximum
Oil Pan
Front Cover Alignment - at Oil Pan Surface
0.0-0.5 mm
0.0-0.02 in
Crankshaft Rear Oil Seal Housing Alignment - at Oil Pan Surface
0.0-0.5 mm
0.0-0.02 in
Oil Pan Alignment - to Rear of Engine Block at Transmission Bell Housing Mounting Surface
0.0-0.1 mm
0.0-0.004 in
Piston Rings
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production
0.23-0.44 mm
0.009-0.017 in
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service
0.23-0.5 mm
0.009-0.0196 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production
0.44-0.7 mm
0.017-0.027 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service
0.44-0.76 mm
0.0173-0.03 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production
0.18-0.75 mm
0.007-0.029 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service
0.18-0.81 mm
0.007-0.032 in
Piston Ring-to-Groove Clearance - First Compression Ring - Production
0.04-0.085 mm
0.00157-0.00335 in
Piston Ring-to-Groove Clearance - First Compression Ring - Service
0.04-0.085 mm
0.00157-0.00335 in
Piston Ring-to-Groove Clearance - Second Compression Ring - Production
0.04-0.078 mm
0.00157-0.0031 in
Piston Ring-to-Groove Clearance - Second Compression Ring - Service
0.04-0.078 mm
0.00157-0.0031 in
Piston Ring-to-Groove Clearance - Oil Control Ring - Production
0.012-0.2 mm
0.0005-0.0078 in
Piston Ring-to-Groove Clearance - Oil Control Ring - Service
0.012-0.2 mm
0.0005-0.0078 in
Pistons and Pins
Pin - Piston Pin Clearance-to-Piston Pin Bore - Production
0.002-0.01 mm
0.00008-0.0004 in
Pin - Piston Pin Clearance-to-Piston Pin Bore - Service
0.002-0.015 mm
0.00008-0.0006 in
Pin - Piston Pin Diameter
23.952-23.955 mm
0.943-0.943 in
Pin - Piston Pin Fit in Connecting Rod Bore - Production
0.007-0.02 mm
0.00027-0.00078 in
Pin - Piston Pin Fit in Connecting Rod Bore - Service
0.007-0.022 mm
0.00027-0.00086 in
Piston - Piston Diameter - Measured Over Coating
96.002-96.036 mm
3.779-3.78 in
Piston - Piston to Bore Clearance - Production
-0.036 to +0.016 mm
-0.0014 to +0.0006 in
Piston - Piston to Bore Clearance - Service Limit With Skirt Coating Worn Off
0.071 mm
0.0028 in
Valve System
Valves - Valve Face Angle
45 degrees
Valves - Valve Face Width
1.25 mm
0.05 in
Valves - Valve Lash
Net Lash - No Adjustment
Valve Lift - Exhaust - Non Active Fuel Management
12.72 mm
0.501 in
Valve Lift - Exhaust - Active Fuel Management
12.94 mm
0.509 in
Valve Lift - Intake - Non Active Fuel Management
12.72 mm
0.501 in
Valve Lift - Intake - Active Fuel Management
12.94 mm
0.509 in
Valves - Valve Seat Angle
46 degrees
Valves - Valve Seat Runout
0.05 mm
0.002 in
Valves - Valve Seat Width - Exhaust
1.78 mm
0.07 in
Valves - Valve Seat Width - Intake
1.02 mm
0.04 in
Valves - Valve Stem Diameter - Production
7.955-7.976 mm
0.313-0.314 in
Valves - Valve Stem Diameter - Service
7.95 mm
0.313 in
Valves - Valve Stem-to-Guide Clearance - Production - Exhaust
0.025-0.066 mm
0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Exhaust
0.093 mm
0.0037 in
Valves - Valve Stem-to-Guide Clearance - Production - Intake
0.025-0.066 mm
0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Intake
0.093 mm
0.0037 in
Rocker Arms - Valve Rocker Arm Ratio
1.70:1
Valve Springs - Valve Spring Free Length
52.9 mm
2.08 in
Valve Springs - Valve Spring Installed Height
45.75 mm
1.8 in
Valve Springs - Valve Spring Load - Closed
340 N at 45.75 mm
76 lb at 1.8 in
Valve Springs - Valve Spring Load - Open
980 N at 33.55 mm
220 lb at 1.32 in
Engine Mechanical Specifications (RPO L92 VIN 8)
Application
Specification
Metric
English
General
Engine Type
V8
Displacement
6.2L
376 CID
RPO
L92
VIN
8
Bore
103.241-103.259 mm
4.065-4.065 in
Stroke
92.0 mm
3.622 in
Compression Ratio
10.5:1
Firing Order
1-8-7-2-6-5-4-3
Active Fuel Management Cylinders - First Design Engine
1-4-6-7
Spark Plug Gap
1.02 mm
0.04 in
Block
Camshaft Bearing Bore 1 and 5 Diameter
59.58-59.63 mm
2.345-2.347 in
Camshaft Bearing Bore 2 and 4 Diameter
59.08-59.13 mm
2.325-2.327 in
Camshaft Bearing Bore 3 Diameter
58.58-58.63 mm
2.306-2.308 in
Crankshaft Main Bearing Bore Diameter
69.871-69.889 mm
2.75-2.751 in
Crankshaft Main Bearing Bore Out-of-Round
0.006 mm
0.0002 in
Cylinder Bore Diameter
103.241-103.259 mm
4.065-4.065 in
Cylinder Head Deck Height - Measuring from the Centerline of Crankshaft to the Deck Face
234.57-234.82 mm
9.235-9.245 in
Cylinder Head Deck Surface Flatness - Measured Within a 152.4 mm (6.0 in) Area
0.11 mm
0.004 in
Cylinder Head Deck Surface Flatness - Measuring the Overall Length of the Block Deck
0.22 mm
0.008 in
Valve Lifter Bore Diameter
21.417-21.443 mm
0.843-0.844 in
Camshaft
Camshaft End Play
0.025-0.305 mm
0.001-0.012 in
Camshaft Journal Diameter
54.99-55.04 mm
2.164-2.166 in
Camshaft Journal Out-of-Round
0.025 mm
0.001 in
Camshaft Lobe Lift - Exhaust - Non Active Fuel Management Cylinders
7.48 mm
0.294 in
Camshaft Lobe Lift - Exhaust - Active Fuel Management Cylinders
7.61 mm
0.300 in
Camshaft Lobe Lift - Intake - Non Active Fuel Management Cylinders
7.48 mm
0.294 in
Camshaft Lobe Lift - Intake - Active Fuel Management Cylinders
7.61 mm
0.300 in
Camshaft Runout - Measured at the Intermediate Journals
0.05 mm
0.002 in
Connecting Rod
Connecting Rod Bearing Clearance - Production
0.023-0.065 mm
0.0009-0.0025 in
Connecting Rod Bearing Clearance - Service
0.023-0.076 mm
0.0009-0.003 in
Connecting Rod Bore Diameter - Bearing End
56.505-56.525 mm
2.224-2.225 in
Connecting Rod Bore Out-of-Round - Bearing End - Production
0.004-0.008 mm
0.00015-0.0003 in
Connecting Rod Bore Out-of-Round - Bearing End - Service
0.004-0.008 mm
0.00015-0.0003 in
Connecting Rod Side Clearance
0.11-0.51 mm
0.00433-0.02 in
Crankshaft
Connecting Rod Journal Diameter - Production
53.318-53.338 mm
2.0991-2.0999 in
Connecting Rod Journal Diameter - Service
53.308 mm
2.0987 in
Connecting Rod Journal Out-of-Round - Production
0.005 mm
0.0002 in
Connecting Rod Journal Out-of-Round - Service
0.01 mm
0.0004 in
Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Production
0.005 mm
0.0002 in
Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Service
0.02 mm
0.00078 in
Crankshaft End Play
0.04-0.2 mm
0.0015-0.0078 in
Crankshaft Main Bearing Clearance - Production
0.02-0.052 mm
0.0008-0.0021 in
Crankshaft Main Bearing Clearance - Service
0.02-0.065 mm
0.0008-0.0025 in
Crankshaft Main Journal Diameter - Production
64.992-65.008 mm
2.558-2.559 in
Crankshaft Main Journal Diameter - Service
64.992 mm
2.558 in
Crankshaft Main Journal Out-of-Round - Production
0.003 mm
0.000118 in
Crankshaft Main Journal Out-of-Round - Service
0.008 mm
0.0003 in
Crankshaft Main Journal Taper - Production
0.01 mm
0.0004 in
Crankshaft Main Journal Taper - Service
0.02 mm
0.00078 in
Crankshaft Rear Flange Runout
0.05 mm
0.002 in
Crankshaft Reluctor Ring Runout - Measured 1.0 mm (0.04 in) Below Tooth Diameter
0.7 mm
0.028 in
Crankshaft Thrust Surface - Production
26.14-26.22 mm
1.029-1.0315 in
Crankshaft Thrust Surface - Service
26.22 mm
1.0315 in
Crankshaft Thrust Surface Runout
0.025 mm
0.001 in
Cylinder Head
Cylinder Head Height/Thickness - Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface
120.2 mm
4.732 in
Surface Flatness - Block Deck - Measured Within a 152.4 mm (6.0 in) Area
0.08 mm
0.003 in
Surface Flatness - Block Deck - Measuring the Overall Length of the Cylinder Head
0.1 mm
0.004 in
Surface Flatness - Exhaust Manifold Deck
0.13 mm
0.005 in
Surface Flatness - Intake Manifold Deck
0.08 mm
0.0031 in
Valve Guide Installed Height - Measured from the Spring Seat Surface to the Top of the Guide
17.32 mm
0.682 in
Intake Manifold
Surface Flatness - Measured at Gasket Sealing Surfaces and Measured Within a 200 mm (7.87 in) Area that Includes 2 Runner Port Openings
0.3 mm
0.118 in
Lubrication System
Oil Capacity - with Filter
5.68 liters
6.0 quarts
Oil Capacity - without Filter
5.20 liters
5.5 quarts
Oil Pressure - Minimum - Hot
41 kPa at 1,000 engine RPM
124 kPa at 2,000 engine RPM
165 kPa at 4,000 engine RPM
6 psig at 1,000 engine RPM
18 psig at 2,000 engine RPM
24 psig at 4,000 engine RPM
Active Fuel Management Relief Valve Oil Pressure - as Measured at Oil Pressure Sensor Location
379-517 kPa
Maximum
55-75 psig
Maximum
Oil Pan
Front Cover Alignment - at Oil Pan Surface
0.0-0.5 mm
0.0-0.02 in
Crankshaft Rear Oil Seal Housing Alignment - at Oil Pan Surface
0.0-0.5 mm
0.0-0.02 in
Oil Pan Alignment - to Rear of Engine Block at Transmission Bell Housing Mounting Surface
0.0-0.1 mm
0.0-0.004 in
Piston Rings
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production
0.23-0.44 mm
0.009-0.017 in
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service
0.23-0.5 mm
0.009-0.0196 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production
0.44-0.7 mm
0.017-0.027 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service
0.44-0.76 mm
0.0173-0.03 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production
0.18-0.75 mm
0.007-0.029 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service
0.18-0.81 mm
0.007-0.032 in
Piston Ring-to-Groove Clearance - First Compression Ring - Production
0.04-0.085 mm
0.00157-0.00335 in
Piston Ring-to-Groove Clearance - First Compression Ring - Service
0.04-0.085 mm
0.00157-0.00335 in
Piston Ring-to-Groove Clearance - Second Compression Ring - Production
0.04-0.078 mm
0.00157-0.0031 in
Piston Ring-to-Groove Clearance - Second Compression Ring - Service
0.04-0.078 mm
0.00157-0.0031 in
Piston Ring-to-Groove Clearance - Oil Control Ring - Production
0.012-0.2 mm
0.0005-0.0078 in
Piston Ring-to-Groove Clearance - Oil Control Ring - Service
0.012-0.2 mm
0.0005-0.0078 in
Pistons and Pins
Pin - Piston Pin Clearance-to-Piston Pin Bore - Production
0.002-0.01 mm
0.00008-0.0004 in
Pin - Piston Pin Clearance-to-Piston Pin Bore - Service
0.002-0.015 mm
0.00008-0.0006 in
Pin - Piston Pin Diameter
23.952-23.955 mm
0.943-0.943 in
Pin - Piston Pin Fit in Connecting Rod Bore - Production
0.007-0.02 mm
0.00027-0.00078 in
Pin - Piston Pin Fit in Connecting Rod Bore - Service
0.007-0.022 mm
0.00027-0.00086 in
Piston - Piston Diameter - Measured Over Coating
96.002-96.036 mm
3.779-3.78 in
Piston - Piston to Bore Clearance - Production
-0.036 to +0.016 mm
-0.0014 to +0.0006 in
Piston - Piston to Bore Clearance - Service Limit With Skirt Coating Worn Off
0.071 mm
0.0028 in
Valve System
Valves - Valve Face Angle
45 degrees
Valves - Valve Face Width
1.25 mm
0.05 in
Valves - Valve Lash
Net Lash - No Adjustment
Valve Lift - Exhaust - Non Active Fuel Management
12.72 mm
0.501 in
Valve Lift - Exhaust - Active Fuel Management
12.94 mm
0.509 in
Valve Lift - Intake - Non Active Fuel Management
12.72 mm
0.501 in
Valve Lift - Intake - Active Fuel Management
12.94 mm
0.509 in
Valves - Valve Seat Angle
46 degrees
Valves - Valve Seat Runout
0.05 mm
0.002 in
Valves - Valve Seat Width - Exhaust
1.78 mm
0.07 in
Valves - Valve Seat Width - Intake
1.02 mm
0.04 in
Valves - Valve Stem Diameter - Production
7.955-7.976 mm
0.313-0.314 in
Valves - Valve Stem Diameter - Service
7.95 mm
0.313 in
Valves - Valve Stem-to-Guide Clearance - Production - Exhaust
0.025-0.066 mm
0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Exhaust
0.093 mm
0.0037 in
Valves - Valve Stem-to-Guide Clearance - Production - Intake
0.025-0.066 mm
0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Intake
0.093 mm
0.0037 in
Rocker Arms - Valve Rocker Arm Ratio
1.70:1
Valve Springs - Valve Spring Free Length
52.9 mm
2.08 in
Valve Springs - Valve Spring Installed Height
45.75 mm
1.8 in
Valve Springs - Valve Spring Load - Closed
340 N at 45.75 mm
76 lb at 1.8 in
Valve Springs - Valve Spring Load - Open
980 N at 33.55 mm
220 lb at 1.32 in
