Vortec 5.3L V8 (LH6) Engine Specs

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Vortec 5.3L V8 (LH6) Engine Overview

Basically this engine is has many same specification with LY5 engine code, the different both of theme is on the block cylinder material and also  this engine series is also completed with active fuel management, this active fuel management is a trademarked name for the automobile variable displacement technology from General Motors, with this fuel management system engine is allowed to turn of half of the cylinders when it haul a light load conditions. This management will significantly improve engine fuel economy. Tested have been done on this system, and it give a good responses, active fuel management system that planted in this Vortec 5.3L V8 (LH6) Engine can give 5.5-7.5% improvement in fuel economy.

Vortec 5.3L V8 (LH6) Engine Specs

Here they are the detailed data specifications of Vortec 5.3L V8 (LH6) Engine

Specs Item Specs
Engine Type 5.3L Gen IV V8 Small Block
Engine Code LH6
Engine Electronic integrated into the dual microprocessor PCM
Displacement 5,328 cc (325.1 cu in)
Transmission Type Available for both manual and auto transmission
Compression Ratio 9.1:1
Bore and Stroke (in.) 3.78 x 3.27
Valve configuration (pcs) overhead valves (2 valves per cylinder)
Valve Lifters hydraulic roller
Fuel System sequential fuel injection
Recommended Fuel regular unleaded
Emissions controls catalytic converter

three-way catalyst

positive crankcase ventilation

Maximum engine speed 5300 rpm
Horsepower(SAE net@rpm) 315–320 hp (235–239 kW) @ 5200 rpm
Torque (lb. ft. @ rpm) 335–340 lb·ft (454–461 N·m) @ 4000 rpm
Intake Manifold  Material composite
Exhaust manifold Material cast nodular iron
Cylinder block material cast aluminum
Cylinder head material cast aluminum
Features extended life spark plugs

extended life coolant

oil level sensor

Oil Life System

Vortec 5.3L V8 (LH6) Engine Applications

This Vortec 5.3L V8 (LH6) Engine is use for following vehicles applications

  • 2004–2009 Chevrolet TrailBlazer including EXT (through 2006)
  • 2005–2009 GMC Envoy Denali
  • 2005–2006 GMC Envoy XL
  • 2005 GMC Envoy XUV
  • 2005–2007 Buick Rainier
  • 2005–2009 Saab 9-7X
  • 2007 Chevrolet Silverado 1500
  • 2007-2009 GMC Sierra 1500

Vortec 5.3L V8 (LH6) Engine www.allenginelist.com

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