Hummer H3 Engines by Year

The H3 was the smallest Hummer, built on the Chevrolet Colorado and GMC Canyon chassis for 2006–2010, with an H3T pickup for 2009–2010. It used the Canyon's inline five; the H3 Alpha added a 5.3 V8. The H2 has its own page.

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.

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H3 (2006–2010): 2006 · 2007 · 2008 · 2009 · 2010

H3 (2006–2010)

The 3.5 and 3.7 fives and the 5.3 V8.

2006 H3 engines

Engine	Rated	Offered in
3.5L / 211 inline-five (L52)	220 hp net	H3 SUV (incl. H3X)

2007 H3 engines

Engine	Rated	Offered in
3.7L / 223 inline-five (LLR)	242 hp net	H3 SUV (incl. H3X)

2008 H3 engines

Engine	Rated	Offered in
3.7L / 223 inline-five (LLR)	242 hp net	H3 SUV (base, H3X, Luxury)
5.3L / 325 V8 (LH8)	300 hp net	H3 Alpha

2009 H3 engines

Engine	Rated	Offered in
3.7L / 223 inline-five (LLR)	239 hp net	H3 SUV, H3T pickup
5.3L / 325 V8 (LH8)	300 hp net	H3 Alpha, H3T Alpha

2010 H3 engines

Engine	Rated	Offered in
3.7L / 223 inline-five (LLR)	239 hp net	H3 SUV, H3T pickup
5.3L / 325 V8 (LH9)	300 hp net	H3 Alpha, H3T Alpha

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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