Thread: LS3 Camaro Engine Specifications

Engine Mechanical Specifications (6.2L LS3)


Application


Specification

Metric


English



• Engine Type


V8



• Displacement



6.2L




376 CID




• RPO


LS3



• VIN


W



• Bore



103.241–103.259 mm




4.065–4.065 in




• Stroke



92.0 mm




3.622 in




• Compression Ratio


10.7:1



• 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



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



7.77 mm




0.306 in




• Camshaft Lobe Lift – Intake



8.24 mm




0.324 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



7.6 Liters




8.0 Quarts




• Oil Capacity – without Filter



7.1 Liters




7.5 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 psi

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



0.17–0.38 mm




0.0067–0.0150 in




• Piston Ring End Gap – First Compression Ring – Measured in Cylinder Bore – Service



0.17–0.44 mm




0.0067–0.0173 in




• Piston Ring End Gap – Second Compression Ring – Measured in Cylinder Bore – Production



0.32–0.63 mm




0.0126–0.0248 in




• Piston Ring End Gap – Second Compression Ring – Measured in Cylinder Bore – Service



0.32–0.69 mm




0.0126–0.0272 in




• Piston Ring End Gap – Oil Control Ring – Measured in Cylinder Bore – Production



0.22–0.79 mm




0.0086–0.031 in




• Piston Ring End Gap – Oil Control Ring – Measured in Cylinder Bore – Service



0.22–0.85 mm




0.0086–0.0335 in




• Piston Ring to Groove Clearance – First Compression Ring – Production



0.030–0.083 mm




0.0012–0.0033 in




• Piston Ring to Groove Clearance – First Compression Ring – Service



0.030–0.083 mm




0.0012–0.0033 in




• Piston Ring to Groove Clearance – Second Compression Ring – Production



0.040–0.083 mm




0.0016–0.0033 in




• Piston Ring to Groove Clearance – Second Compression Ring – Service



0.040–0.083 mm




0.0016–0.0033 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 in–0.0079 in



Pistons and Pins



• Pin – Piston Pin Clearance to Piston Pin Bore – Production



0.002 mm–0.01 mm




0.0008 in–0.0004 in




• Pin – Piston Pin Clearance to Piston Pin Bore – Service



0.002 mm–0.015 mm




0.0008 in–0.0006 in




• Pin – Piston Pin Diameter



23.952 mm–23.955 mm




0.943 in–0.943 in




• Pin – Piston Pin Fit in Connecting Rod Bore – Production



0.007 mm–0.02 mm




0.00027 in–0.00078 in




• Pin – Piston Pin Fit in Connecting Rod Bore – Service



0.007 mm–0.022 mm




0.00027 in–0.00086 in




• Piston – Piston Diameter – Measured Over Skirt Coating



103.258 mm–103.289 mm




4.0653 in–4.0665 in




• Piston – Piston to Bore Clearance – Production



−0.048 mm to +0.001 mm




−0.0009 in to +0.000 in




• Piston – Piston to Bore Clearance – Service Limit with Skirt Coating Worn Off



0.055 mm




0.0022 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



13.97 mm




0.55 in




• Valve Lift – Intake



13.22 mm




0.52 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



400 N at 45.75 mm




90 lb at 1.8 in




• Valve Springs – Valve Spring Load – Open



1310 N at 31.74 mm




295 lb at 1.25 in

Lots of good motor information there thanks for sharing I now have a place to go if or when I need these specs.