The Chevy LQ9 6.0L engine is a high-performance V8 engine produced by General Motors. It was first introduced in 2002 and was primarily used in trucks, SUVs, and high-performance cars such as the Chevrolet Corvette and Pontiac GTO.
The LQ9 engine is a part of GM’s Vortec engine family and features an iron block and aluminum heads. It has a displacement of 6.0 liters (364 cubic inches) and a high compression ratio of 10.0:1, which contributes to its impressive power output.
One of the key features of the LQ9 engine is its use of the Gen III small-block architecture, which includes advanced technologies such as electronic throttle control, drive-by-wire throttle, and coil-near-plug ignition. It also includes a high-performance camshaft, larger injectors, and other upgrades that contribute to its performance.
Specifications for the Chevy LQ9 6.0L engine:
| Engine Type | V8 |
|---|---|
| Displacement | 6.0 liters (364 cubic inches) |
| Bore x Stroke | 4.00 in x 3.62 in |
| Compression Ratio | 10.0:1 |
| Valvetrain | OHV (Overhead Valve) |
| Fuel Delivery | Sequential Fuel Injection |
| Horsepower | 345 hp @ 5,200 rpm |
| Torque | 380 lb-ft @ 4,000 rpm |
| Block Material | Cast Iron |
| Cylinder Head Material | Aluminum |
| Firing Order | 1-8-7-2-6-5-4-3 |
| Engine Weight | Approx. 480 lbs |
| Recommended Fuel | Regular Unleaded |
| Recommended Oil | 5W-30 or 10W-30 Synthetic |
| Maximum Engine Speed | 6,500 rpm |
| Applications | 2002-2007 Chevrolet Silverado HD, GMC Sierra HD, and 2003-2007 Chevrolet Express/GMC Savana Van |
| Camshaft | Hydraulic roller |
| Camshaft Duration | 204/211 degrees @ 0.050″ lift |
| Camshaft Lift | 0.520″/0.520″ |
| Intake Manifold | Composite |
| Throttle Body | 78mm |
| Ignition System | Coil-near-plug |
| Exhaust Manifold | Cast iron |
| Fuel Injectors | 28.8 lb/hr |
| Oil Capacity | 6 quarts |
| Coolant Capacity | 16.6 quarts |
| Emissions Control | Catalytic converter, positive crankcase ventilation |
| Transmission Compatibility | 4L80E, 4L85E |
Chevy LQ9 engine oil specifications
| Spec | Value |
|---|---|
| Oil capacity | 7 quarts (6.6 liters) |
| Oil type | GM dexos1 Gen 2 synthetic blend |
| Recommended oil change interval | Every 7,500 miles or 12 months (whichever comes first) |
It’s important to note that these specifications may vary depending on the year and model of the vehicle, so it’s always a good idea to consult the owner’s manual for specific information about your Chevy LQ9 engine.
Fuel consumption
The fuel consumption of the Chevy LQ9 6.0L engine can vary depending on several factors such as vehicle weight, driving conditions, and modifications. However, here are the estimated fuel consumption ratings for different vehicles equipped with the Chevy LQ9 6.0L engine:
- 2003-2006 Chevrolet Silverado 1500 SS with 2WD: 12 mpg city, 16 mpg highway, 14 mpg combined
- 2003-2006 Chevrolet Silverado 1500 SS with 4WD: 12 mpg city, 15 mpg highway, 13 mpg combined
- 2002-2006 Chevrolet Avalanche 1500 with 2WD: 12 mpg city, 17 mpg highway, 14 mpg combined
- 2002-2006 Chevrolet Avalanche 1500 with 4WD: 12 mpg city, 16 mpg highway, 13 mpg combined
It’s important to note that actual fuel consumption can vary depending on individual driving habits and conditions, and may be affected by factors such as traffic congestion, driving speed, and vehicle maintenance. Regular maintenance, including replacing air and fuel filters, can help ensure optimal fuel efficiency and performance from the Chevy LQ9 6.0L engine.
What cars use the Chevy LQ9 engine?
| Make | Model | Year | Engine Type | Horsepower | Torque | Transmission |
|---|---|---|---|---|---|---|
| Cadillac | Escalade | 2002-2006 | 6.0L V8 | 345 hp | 380 lb-ft | 4-speed automatic |
| Chevrolet | Avalanche 1500 | 2002-2006 | 6.0L V8 | 345 hp | 380 lb-ft | 4-speed automatic |
| Chevrolet | Silverado 1500 SS | 2003-2006 | 6.0L V8 | 345 hp | 380 lb-ft | 4-speed automatic |
| Chevrolet | Suburban 1500 | 2000-2006 | 6.0L V8 | 345 hp | 380 lb-ft | 4-speed automatic |
| Chevrolet | Tahoe | 2000-2006 | 6.0L V8 | 345 hp | 380 lb-ft | 4-speed automatic |
| GMC | Sierra 1500 Denali | 2002-2006 | 6.0L V8 | 345 hp | 380 lb-ft | 4-speed automatic |
| GMC | Yukon Denali | 2000-2006 | 6.0L V8 | 345 hp | 380 lb-ft | 4-speed automatic |
The Chevy LQ9 6.0L engine was primarily used in full-size trucks and SUVs from General Motors, including the Cadillac Escalade, Chevrolet Avalanche 1500, Silverado 1500 SS, Suburban 1500, Tahoe, GMC Sierra 1500 Denali, and Yukon Denali.
The cost of a Chevy LQ9 kit
The cost of a Chevy LQ9 rebuild kit can vary depending on the manufacturer, the specific components included in the kit, and the seller’s pricing.
On average, a basic rebuild kit for the Chevy LQ9 engine can cost anywhere from $500 to $800. However, if you’re looking for a more comprehensive kit with higher-end components, the cost can exceed $1,000.
It’s worth noting that while a rebuild kit may seem like a significant expense, it can save you money in the long run by allowing you to overhaul your engine rather than replacing it entirely. Additionally, a properly rebuilt engine can improve performance and fuel efficiency, making it a worthwhile investment for many Chevy LQ9 engine owners.
A table of estimated costs for various Chevy LQ9 engine rebuild, performance, and accessory kits. Please note that these prices are for estimation purposes only and can vary based on the manufacturer, seller, and specific components included in each kit.
| Kit Type | Estimated Cost Range |
|---|---|
| Rebuild Kit | $500 – $1,200 |
| Stroker Kit | $1,500 – $3,000 |
| Cam Kit | $500 – $1,000 |
| Turbo Kit | $2,000 – $6,000 |
| Supercharger Kit | $3,000 – $8,000 |
| Performance Rebuild Kit | $800 – $1,500 |
| Accessory Drive Kit | $500 – $1,000 |
| Camshaft Kit | $500 – $1,500 |
As previously mentioned, these prices are for estimation purposes only and can vary depending on various factors. It’s recommended to research and compare prices from multiple manufacturers and sellers before making a purchase. Additionally, consider the compatibility of each kit with your specific engine model and year, as well as any additional components or services required for installation.
Price
An estimated price table for the Chevy LQ9 6.0L engine. Please note that the prices can vary depending on the location, condition, and availability.
| Type of Engine | Price Range | Description |
|---|---|---|
| New Engine | $5,000 – $10,000 | Brand new engine with full warranty from Chevy |
| Used Engine | $1,500 – $4,500 | Pre-owned engine in working condition |
| Remanufactured Engine | $3,500 – $6,500 | Rebuilt engine by a third-party with a warranty |
| Cost of Replacement | $3,000 – $8,000 | Cost to replace the engine, including labor costs |
Please keep in mind that these prices are estimates and are subject to change based on the specific engine and location. Additionally, the cost of replacement may vary depending on the extent of damage and the amount of labor required for the installation. It is recommended to consult with a certified mechanic or Chevy dealership for accurate pricing and information.
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