Description
6.0L V8 LQ9 364 CID Engine
Upgrade or replace your vehicle’s powerplant with a GM 6.0L V8 LQ9 engine. Also known as the Vortec HO 6000, the LQ9 is a high-output Gen III LS/Vortec engine originally developed for Cadillac applications.
The LQ9 uses a 6.0-liter / 364 cubic-inch displacement, an iron cylinder block and aluminum cylinder heads. Factory specifications for the LQ9 are commonly listed at approximately 345 horsepower and 380 lb-ft of torque, with a 10.0:1–10.1:1 compression ratio depending on the documented specification.
Engine Specifications
* Engine: GM LQ9
* Family: Vortec 6000 / Vortec HO 6000
* Displacement: 6.0L / 364 CID
* Configuration: V8
* Generation: Gen III
* Block: Cast iron
* Bore: 4.000 in
* Stroke: 3.622 in
* Compression Ratio: Approximately 10.0:1–10.1:1
* Factory-rated output: Approximately 345 HP
* Factory-rated torque: Approximately 380 lb-ft
* Fuel System: Electronic fuel injection
* VIN/RPO: VIN code N / LQ9
* Ignition: 24X system
* Throttle: Drive-by-wire, depending on application
Compatible Applications
The LQ9 was used in a number of GM performance and high-output applications, including:
* 2002–2006 Cadillac Escalade
* 2002–2006 Cadillac Escalade EXT
* 2003–2006 Cadillac Escalade ESV
* 2003–2007 Chevrolet Silverado SS
* 2004–2006 Chevrolet Silverado/Sierra HO applications
* 2005–2006 GMC Sierra Denali
* 2006–2007 Chevrolet Silverado Classic VortecMAX
* 2006–2007 GMC Sierra Classic VortecMAX
Important: Engine compatibility can vary by year, VIN, RPO code, electronics, accessories, transmission and vehicle configuration. Please provide your VIN or original engine information before ordering so compatibility can be confirmed.
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