Chevrolet Avalanche Engines by Year

The Avalanche was a Suburban-based pickup with a fold-down midgate, sold for 2002–2013. It used the same V8s as the Silverado and Suburban; the heavy-duty 2500 had the 8.1 big block through 2006.

Pick a year to see every engine offered that model year, with its code, rated horsepower and the trims it came in. Each engine links to its full specs.

Jump to a year

First generation (2002–2006): 2002 · 2003 · 2004 · 2005 · 2006

Second generation (2007–2013): 2007 · 2008 · 2009 · 2010 · 2011 · 2012 · 2013

First generation (2002–2006)

The 5.3 V8 and the 8.1 in the 2500.

2002 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (LM7)	285 hp net	Avalanche 1500, 2WD and 4WD
8.1L / 496 V8 (L18)	340 hp net	Avalanche 2500

2003 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (L59)	—	Avalanche 1500
5.3L / 325 V8 (LM7)	285 hp net	Avalanche 1500, 2WD and 4WD
8.1L / 496 V8 (L18)	340 hp net	Avalanche 2500

2004 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (LM7)	295 hp net	Avalanche 1500, 2WD and 4WD
8.1L / 496 V8 (L18)	320 hp net	Avalanche 2500, 4WD only

2005 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (L59)	—	Avalanche 1500
5.3L / 325 V8 (LM7)	295 hp net	Avalanche 1500, 2WD and 4WD
8.1L / 496 V8 (L18)	320 hp net	Avalanche 2500, 4WD only

2006 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (L59)	—	Avalanche 1500
5.3L / 325 V8 (LM7)	295 hp net	Avalanche 1500, 2WD and 4WD
8.1L / 496 V8 (L18)	320 hp net	Avalanche 2500, 4WD only

Second generation (2007–2013)

The 5.3 V8s and the 6.0.

2007 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (LMG)	310 hp net	4WD standard; 2WD no-cost option
5.3L / 325 V8 (LY5)	320 hp net	LS/LT/LTZ, 2WD
6.0L / 364 V8 (L76)	366 hp net	LT, LTZ; 2WD and 4WD

2008 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (LMG)	310 hp net	4WD standard; 2WD no-cost option
5.3L / 325 V8 (LY5)	320 hp net	LS/LT/LTZ, 2WD
6.0L / 364 V8 (L76)	366 hp net	LT, LTZ; 2WD and 4WD

2009 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (LMG)	310 hp net	4WD standard; 2WD no-cost option
5.3L / 325 V8 (LY5 / LC9)	320 hp net	LS/LT/LTZ, 2WD, 4WD (from midyear 2009)
6.0L / 364 V8 (L76)	366 hp net	LT, LTZ; 2WD and 4WD

2010 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (LC9)	320 hp net	LS/LT/LTZ, 2WD, 4WD

2011 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (LC9)	320 hp net	LS/LT/LTZ, 2WD, 4WD

2012 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (LC9)	320 hp net	LS/LT/LTZ, 2WD, 4WD

2013 Avalanche engines

Engine	Rated	Offered in
5.3L / 325 V8 (LC9)	320 hp net	LS/LT/LTZ, 2WD, 4WD

Working on one of these engines?

• Engine displacement from bore and stroke
• Static and dynamic compression ratio
• Which camshaft for your build
• What size carburetor
• Horsepower to torque at any RPM
• Torque converter stall speed

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