Type
5.3L V8
Displacement
5328cc (325 ci)
Compression Ratio
9.9:1 (L33/LH6)
9.5:1 (LM7/L59)
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
96.01 x 92mm
Fuel System
Sequential Fuel Injection
Horsepower
310 hp (224 kw) @ 5200 rpm (L33/LH6)
295 hp (220 kw) @ 5200 rpm (LM7/L59)
Torque
335 lb-ft (454Nm) @ 4000 rpm
(LH6/LM7/L59/L33)
Fuel Shut-off
5600 rpm with manual transmission
5900 rpm w/auto and ETC
6000 rpm w/auto without ETC
Emissions Controls
Evaporative System
Catalytic Converter
Positive Crankcase Ventilation
Returnless Fuel System
Block
Cast Iron (LM7/L59)
Cast Aluminum (L33/LH6)
Cylinder Head
Cast Aluminum
Intake Manifold
Composite
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
Floating Pin Pistons
5.3L Vortec Specs
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