ls2 specs
08-02-2004, 10:24 PM
#1
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ls2 specs i see everyone asking for these so try and make sense of it. right from gm
Engine Mechanical Specifications
Application
Specification
Metric
English
General
Engine Type
V8
Displacement
6.0L
364 CID
RPO
LS2
VIN
U
Bore
101.618-101.636 mm
4.0007-4.0017 in
Stroke
92.0 mm
3.622 in
Compression Ratio
10.9:1
Firing Order
1-8-7-2-6-5-4-3
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
101.618-101.636 mm
4.0007-4.0017 in
Cylinder Bore Taper - Thrust Side
0.018 mm
0.0007 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 - Intake
7.78 mm
0.306 in
Camshaft Lobe Lift - Exhaust
7.77 mm
0.305 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 Two Runner Port Openings
0.3 mm
0.118 in
Lubrication System
Oil Capacity - with Filter
5.2 liters
5.5 quarts
Oil Capacity - without Filter
4.7 liters
5.0 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
Oil Pan
Front Cover Alignment - at Oil Pan Surface
0.0-0.5 mm
0.0-0.02 in
Rear Cover 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
0.0-0.25 mm
0.0-0.01 in
Piston Rings
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production
0.20-0.41 mm
0.008-0.016 in
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service
0.20-0.41 mm
0.008-0.016 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production
0.37-0.69 mm
0.015-0.027 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service
0.37-0.69 mm
0.015-0.027 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production
0.22-0.79 mm
0.009-0.031 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service
0.22-0.79 mm
0.009-0.031 in
Piston Ring to Groove Clearance - First Compression Ring - Production
0.030-0.10 mm
0.0012-0.0040 in
Piston Ring to Groove Clearance - First Compression Ring - Service
0.030-0.10 mm
0.0012-0.0040 in
Piston Ring to Groove Clearance - Second Compression Ring - Production
0.035-0.078 mm
0.0014-0.0031 in
Piston Ring to Groove Clearance - Second Compression Ring - Service
0.035-0.0078 mm
0.0014-0.0031 in
Piston Ring to Groove Clearance - Oil Control Ring - Production
0.013-0.201 mm
0.0005-0.0079 in
Piston Ring to Groove Clearance - Oil Control Ring - Service
0.013-0.201 mm
0.0005-0.0079 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 Skirt Coating
0.00-0.00 mm
0.00-0.00 in
Piston - Piston to Bore Clearance - Production
0.00-0.00 mm
0.00-0.00 in
Piston - Piston to Bore Clearance - Service Limit with Skirt Coating Worn Off
0.00-0.00 mm
0.00-0.00 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
Valves - Valve Lift - Intake
13.27 mm
0.522 in
Valves - Valve Lift - Exhaust
13.25 mm
0.521 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 - 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 - 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
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
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
Application
Specification
Metric
English
General
Engine Type
V8
Displacement
6.0L
364 CID
RPO
LS2
VIN
U
Bore
101.618-101.636 mm
4.0007-4.0017 in
Stroke
92.0 mm
3.622 in
Compression Ratio
10.9:1
Firing Order
1-8-7-2-6-5-4-3
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
101.618-101.636 mm
4.0007-4.0017 in
Cylinder Bore Taper - Thrust Side
0.018 mm
0.0007 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 - Intake
7.78 mm
0.306 in
Camshaft Lobe Lift - Exhaust
7.77 mm
0.305 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 Two Runner Port Openings
0.3 mm
0.118 in
Lubrication System
Oil Capacity - with Filter
5.2 liters
5.5 quarts
Oil Capacity - without Filter
4.7 liters
5.0 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
Oil Pan
Front Cover Alignment - at Oil Pan Surface
0.0-0.5 mm
0.0-0.02 in
Rear Cover 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
0.0-0.25 mm
0.0-0.01 in
Piston Rings
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production
0.20-0.41 mm
0.008-0.016 in
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service
0.20-0.41 mm
0.008-0.016 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production
0.37-0.69 mm
0.015-0.027 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service
0.37-0.69 mm
0.015-0.027 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production
0.22-0.79 mm
0.009-0.031 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service
0.22-0.79 mm
0.009-0.031 in
Piston Ring to Groove Clearance - First Compression Ring - Production
0.030-0.10 mm
0.0012-0.0040 in
Piston Ring to Groove Clearance - First Compression Ring - Service
0.030-0.10 mm
0.0012-0.0040 in
Piston Ring to Groove Clearance - Second Compression Ring - Production
0.035-0.078 mm
0.0014-0.0031 in
Piston Ring to Groove Clearance - Second Compression Ring - Service
0.035-0.0078 mm
0.0014-0.0031 in
Piston Ring to Groove Clearance - Oil Control Ring - Production
0.013-0.201 mm
0.0005-0.0079 in
Piston Ring to Groove Clearance - Oil Control Ring - Service
0.013-0.201 mm
0.0005-0.0079 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 Skirt Coating
0.00-0.00 mm
0.00-0.00 in
Piston - Piston to Bore Clearance - Production
0.00-0.00 mm
0.00-0.00 in
Piston - Piston to Bore Clearance - Service Limit with Skirt Coating Worn Off
0.00-0.00 mm
0.00-0.00 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
Valves - Valve Lift - Intake
13.27 mm
0.522 in
Valves - Valve Lift - Exhaust
13.25 mm
0.521 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 - 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 - 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
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
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
12-19-2006, 04:42 AM
#3
TECH Regular
Join Date: Mar 2002
Posts: 433
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Is there any fresh piston to wall clearance info for stock LS2 ?
I got my hands on a unit which dealer had replaced under warranty due to excessive noise, possibly piston related but not necessarily... Clearances measured were ~.002. #1 was ~.0025 and out of round by .001.
Any ideas where these clearances should be ?
Edit:
OK found it here
http://www.ls2.com/boggs/LS2/engine/...calspecs03.JPG
I got my hands on a unit which dealer had replaced under warranty due to excessive noise, possibly piston related but not necessarily... Clearances measured were ~.002. #1 was ~.0025 and out of round by .001.
Any ideas where these clearances should be ?
Edit:
OK found it here
http://www.ls2.com/boggs/LS2/engine/...calspecs03.JPG
Last edited by pekkaz; 12-19-2006 at 11:31 AM.
09-24-2009, 11:33 PM
#4
Teching In
Join Date: Aug 2009
Location: Battle Creek, MI
Posts: 16
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Just to confirm, also found it here -
http://www.classicchevyandcorvettesh...LLS2specs.html
Piston - Piston to Bore Clearance - Production
-0.022-0.08 mm
-0.0009-0.0012 in
Piston - Piston to Bore Clearance - Service Limit with Skirt Coating Worn Off
0.024-0.08 mm
0.00094-0.0031 in
http://www.classicchevyandcorvettesh...LLS2specs.html
Piston - Piston to Bore Clearance - Production
-0.022-0.08 mm
-0.0009-0.0012 in
Piston - Piston to Bore Clearance - Service Limit with Skirt Coating Worn Off
0.024-0.08 mm
0.00094-0.0031 in
