NO Turbo-Diesel forthcoming for the H2! [Archive] - Hummer H2 Forum: H2 forums

NO Turbo-Diesel forthcoming for the H2!

steve long
09-22-2003, 03:48 PM
In my on-again / off-again attempt(s) to wrap my hands around an H2 with a Turbo-Diesel powerplant ... I reverted back to my HummerPro rep at ... who recently sent me the following e-mail:

"At this time, HUMMER has no plans to offer the Duramax Diesel in the H2._ Installing a diesel engine in the H2 is considered cost prohibitive and would require a total reconfiguration of the vehicle."

"The Vortec 6000 High Output V8 and heavy-duty 4L65-E four-speed automatic transmission with overdrive offer the best-in-class power and performance._ The Vortec 6000 pumps 316 horsepower at 5200 rpm and 360 lb.-ft of torque at 4000, capable of out-muscling and out-torquing H2's premium off-road competitors._ A standard 4.10 axle ratio, combined with the transmission's deep first-gear ratio and transfer case low-range gear reduction, provides an excellent 33:1 crawl ratio for very slow, controlled, high-torque rock and obstacle climbing capability."

In speaking with the rep, I was told that the (GM) Turbo-Diesel engine simply WOULD NOT FIT into the (H2) engine bay ... nor would the accompanying 5 speed automatic transmission (fit) that is mated with the TD engine. The H2's frame is a shortened version of the Tahoe's frame. In shortening the frame, the wheels were moved outwards, for greater stability. That longer wheelbase on a shorter frame results in a shorter nose. With a shorter nose comes the problem(s) of ... not enough room in the engine bay (for the TD engine). In order to drop in the Duramax Diesel, an elongated H2 frame would be required ... which opens up a whole new can of worms for re-engineering, etc ... for a unit that will yield 40,000 units per year.

DANG! Back to my original plan ... Cadillac Escalade. Here's a quick comparison of varying information:

H2 vs. Escalade
Length: 189.8 in. / 198.9
Width: 81.2 in. / 78.9
Height: 79.2 in. / 76.5
Wheel Base: 122.8 in. / 116
Ground Clearance: 9.9 in. / 10.6 (very interesting!)
Curb Weight: 6400 lbs. / 5571 (better gas mileage for the Escalade)
Gross Weight: 8600 lbs. / 7000
Horsepower: 316 hp / 345
Max Horsepower: 5200 rpm / 4000
Torque: 360 ft-lbs. / 380
Maximum Payload: 2200 lbs. / 1429
Maximum Towing Capacity: 6700 lbs. /8100 (interesting!)
Drive Type: 4WD / AWD
Turning Circle: 43.5 ft. / 39.5
Fuel Tank Capacity: 32 gal. / 26

Yes, I know they are different vehicles. With that in mind, I KNOW that I will be driving (using gasoline) more than off-roading. Doubtful that I would drag an Escalade to do serious off-roading!

09-23-2004, 02:19 PM
I have a Duramax in my H2 And I love it!

09-23-2004, 03:24 PM
Can you show some pictures.... :seeya

steve long
09-23-2004, 09:11 PM
Hmmm ... do tell! When did you do the install ... and what did you have to cut (if anything)!? What kind of MPG do you get?

09-28-2004, 09:52 AM
We drove the H2 from Butte, Montana to Ogden, Utah at 90 mph and averaged 16.8 mpg! That is with the chip cranked up. There is some cutting and alot of modifacation required. The On-Star system must be disabled. (they will shut it down) If you have any more questions please let me know. [email protected] if you want pictures please e-mail me.