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What LS engine is in a 2007 Avalanche?

The 2007 Chevrolet Avalanche was equipped with the powerful LS engine, a staple of General Motors' truck and SUV lineup. Specifically, the 2007 Avalanche came standard with the 5.3-liter LS4 V8 engine, delivering impressive performance and capability.


The LS4 V8 Engine


The LS4 engine in the 2007 Avalanche was a 5.3-liter V8 that produced 295 horsepower and 335 lb-ft of torque. This engine was part of GM's renowned LS engine family, known for their robust design, excellent power output, and impressive fuel efficiency.


The LS4 featured an aluminum block and heads, as well as variable valve timing, which helped optimize power and efficiency. It was paired with a 4-speed automatic transmission, providing smooth and responsive power delivery.


Avalanche Performance and Capability


With the LS4 V8 under the hood, the 2007 Chevrolet Avalanche was a capable and versatile vehicle. It could tow up to 8,100 pounds and had a maximum payload capacity of 1,550 pounds. The Avalanche's combination of power, utility, and comfort made it a popular choice for those who needed a truck-based SUV with the flexibility to handle a variety of tasks.


Conclusion


The 2007 Chevrolet Avalanche's LS4 V8 engine was a key component of its impressive performance and capability. This powerful and efficient engine, part of GM's renowned LS family, provided the Avalanche with the muscle it needed to tackle a wide range of tasks, from towing heavy loads to navigating rough terrain.

How much horsepower does a 2007 Chevy Avalanche 5.3 have?


320 horsepower
The two-wheel-drive LS, LT1 and LT2 models come with the base engine -- a Vortec 5.3-liter V8 with Active Fuel Management that generates 320 horsepower and 340 pound-feet of torque. Optional is the same engine with E85 Flex Fuel capability.



What 5.3 came in the Chevy Avalanche?


Engines

YearEngineNotes
2002–20035.3L Vortec 5300 V8Power and torque ratings are on regular gasoline. Flex-fuel capability available in 2005 and 2006.
2004–2005
2006
2002–20038.1L Vortec 8100 V82500 only.



What year is 5.3 LS the best?


The good years: 1999-2006
However, some Gen III engines were still under the hood of 2007 model-year trucks and SUVs. So, without digging into the nitty gritty details, the safest way to ensure you're getting a third-gen Vortec 5.3 is sourcing a vehicle that is from 2006 or older.



What years of Avalanche to avoid?


The massive Chevy Avalanche began production in 2001 and lasted in the vehicle world until 2013. It was an excellent car, but there are some definite Chevy Avalanche years to avoid. If you want to make the most out of your investment, stay away from the 2002, 2003, 2004, 2005, 2007, 2008, 2010 models of this vehicle.



Is a 5.7 Vortec a LS motor?


CLARIFICATION: Everyone consistently calls a Vortec an LS and that is not accurate! Although Vortec engines are "LS" based they are NOT LS engines IMO. Besides most Vortec's being iron block, as seen above there are some serious size differences and considerations depending on your project.



Is an LM7 an LS motor?


The LR4 was introduced in 1999. Along with the LM7 and LQ4, they were the first LS truck engines.



What is the difference between LS and LT Avalanche?


The Difference Between LS and LT
The LS will add on extra amenities – often nicer interior or exterior upgrades or more premium technology. The LT follows after the LS, offering even better features at a slightly higher MSRP. While these features vary from model to model, you'll notice a more luxurious feel overall.



Does the Chevy Avalanche have an LS?


The Chevy Avalanche comes in three trim levels, each featuring several available options. You can choose from the LS, LT, and LTZ trims when you shop for an Avalanche at Tim\s Truck Capital.



What type of LS engine is the 5.3 Vortec?


The 5.3L LS, or Vortec 5300, is primarily a truck/SUV engine that spanned both the Gen. III and Gen. IV versions of the GM LS lifespan. It's essentially a longer-stroke version of the 4.8L LS and powered vehicles such as the Silverado, Sierra, Yukon, and Escalade.



What engine does my 07 Avalanche have?


Vortec 5.3L V8 SFI
Engine, Vortec 5.3L V8 SFI with Active Fuel Management (320 hp [238.6 kW] @ 5200 rpm, 340 lb-ft of torque [459.0 N-m] @ 4200 rpm), iron block (Standard with CC10936 Models only.)


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.