Hummer H1 Engines by Year

The H1 was AM General's civilian version of the military Humvee, sold for 1992–2006 (there was no 2005). Most had GM's 6.2 or 6.5 diesel V8, turbocharged from 1996; a few had a 5.7 gas V8, and the final H1 Alpha used the 6.6 Duramax.

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

H1 (1992–2006): 1992 · 1993 · 1994 · 1995 · 1996 · 1997 · 1998 · 1999 · 2000 · 2001 · 2002 · 2003 · 2004 · 2006

H1 (1992–2006)

1992 H1 engines

Engine	Rated	Offered in
6.2L / 379 V8 diesel	150 hp net	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab

1993 H1 engines

Engine	Rated	Offered in
6.2L / 379 V8 diesel	150 hp net	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab

1994 H1 engines

Engine	Rated	Offered in
6.5L / 395 V8 diesel	170 hp net	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab

1995 H1 engines

Engine	Rated	Offered in
5.7L / 350 V8 (L05)	—	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab
6.5L / 395 V8 diesel	170 hp net	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab

1996 H1 engines

Engine	Rated	Offered in
5.7L / 350 V8 (L05)	—	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab
6.5L / 395 V8 diesel	—	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab
6.5L / 395 V8 diesel	170 hp net	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab

1997 H1 engines

Engine	Rated	Offered in
6.5L / 395 V8 diesel	—	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab
6.5L / 395 V8 diesel	170 hp net	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab

1998 H1 engines

Engine	Rated	Offered in
6.5L / 395 V8 diesel	—	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab
6.5L / 395 V8 diesel	195 hp net	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab

1999 H1 engines

Engine	Rated	Offered in
6.5L / 395 V8 diesel	195 hp net	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab

2000 H1 engines

Engine	Rated	Offered in
6.5L / 395 V8 diesel	195 hp net	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab

2001 H1 engines

Engine	Rated	Offered in
6.5L / 395 V8 diesel	195 hp net	Hard Top, Open Top, Wagon, 2-passenger Enlarged Cab

2002 H1 engines

Engine	Rated	Offered in
6.5L / 395 V8 diesel	195 hp net	Open Top, Wagon

2003 H1 engines

Engine	Rated	Offered in
6.5L / 395 V8 diesel	195 hp net	Open Top, Wagon

2004 H1 engines

Engine	Rated	Offered in
6.5L / 395 V8 diesel	205 hp net	Open Top, Wagon

2006 H1 engines

Engine	Rated	Offered in
6.6L / 403 V8 diesel (LLY)	300 hp net	H1 Alpha Open Top, H1 Alpha Wagon

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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