Type
6.0L V8
Displacement
5967cc (364 ci)
Compression Ratio
10.0:1 (LQ9)
9.4:1 (LQ4)
Valve Configuration
Overhead Valves (2 valves per
cylinder)
Valve Lifters
Hydraulic Roller
Firing Order
1 - 8 - 7 - 2 - 6 - 5 - 4 - 3
Bore x Stroke
101.6 x 92mm
Fuel System
Sequential Fuel Injection
Horsepower
345 hp (257 kw) @ 5200 rpm (LQ9)
300 hp (224 kw) @ 4400 rpm (LQ4)
Torque
380 lb-ft (515 Nm) @ 4000 rpm (LQ9)
360 lb-ft (488 Nm) @ 4000 rpm (LQ4)
Fuel Shut-off
6000 rpm
Emissions Controls
Evaporative System
Catalytic Converter
Positive Crankcase Ventilation
Block
Cast Iron
Cylinder Head
Cast Aluminum
Exhaust Manifold
High Silicon Molybdenum
Cast Nodular Iron
Main Bearing Caps
Powered Metal
Crankshaft
Cast Iron with undercut and rolled
Fillets
Camshaft
Steel
Connecting Rods
Powered Metal
Additional features
Extended Life Spark Plugs
Extended Life Coolant
Oil Level Sensor
Oil Life System
Electronic Throttle Control
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6.0L Vortec Specs