HUMMER H3 Upgrades: Part Out 

That's awesome! Feel free to send us pictures of your build to our Facebook, we enjoy seeing what people are building! facebook.com/PARTOUTAccessories/

Join our H3 off road page on FB. Quite a few people on there and its a very active site. I have the 3.5 in mine and have been running and wheeling 35's without issue at all. I am also in the process of setting mine up for Overlanding.

Awesome can you give me a link or at least the NAME OF THE GROUP????

H3 Off Road is the name of the group :)

Because snake oil will never cease to exist

We just contacted them after seeing your comment and our link in the description of our video no longer works. Apparently they discontinued the programmer for all models except the 2008 Hummer H3's. That is news to us since we shot the video two years ago, we are sorry for the inconvenience on that.

I benched my Wrangler for an H2....Next i want H3T alpha one day.

You are right, (and we tried that route) you can crank the torsion bars and use the stock shocks but the shocks will be topped out at only 5" of travel assuming that you wouldn't need a shock spacer to get the shocks back on. Tightening the factory torsion bars would be enough to clear a 35" but barely and not level the truck out. Plus, with cranking the factory torsion bars you'll end up dealing with a very poor ride quality, and prematurely wear out the stock torsion bars and shocks. As far as alignments go, it should be assumed that any time you modify the suspension of your vehicle to get it aligned. Sometimes when in front of the camera we forget to mention the common things. So yes, you can crank the torsion bars and get away with it for a short while but we wanted to have longevity and ride quality for this H3.

@@PARTOUTaccessories the travel doesn't change when tightening the torsion bar bolt just the ride height, I recommend getting Fox Shocks, again zero love is necessary to fit 35 inch tires

Exactly right.

Good Question; the leveling kit only affects the front of the vehicle. It brings the front up to match the rear. New shocks are always recommended with a leveling kit as well. The CV angles will change but they are still well within their functioning angles and will not cause any extra wear if everything is installed and adjusted properly.

@@PARTOUTaccessories One other question I had for you guys was did you discover any other tuners that would be available for anyone pre-2008 that would work? Or is it just a matter of finding a Dyno at that point and well...spending -that- kind of cash? Also, thanks for the reply! Appreciate the advice, I still haven't done the 35's on my truck yet, but I did replace the rims, and will need to replace the front shocks before I go further to get the look right. Tires are probably due in a few thousand K more too.

Just contacted the owner of the H3 and he said, "To be honest the way the programmer changed the Hummer's performance was the main reason for not selling the Hummer. It really makes a world of difference when running 35's on it. The Hypertech is the solid choice to go with"

Thanks on the input for the extended shocks Chance, we went ahead and put some on in our latest video with a Hummer H3T Alpha.

Good question, it depends on what you are wanting to get out of your H3, if you are looking to go beyond the 2" Leveling kit by Zone Offroad, you could look up Old Man Emu Lifts on the H3.

The Hypertech programmer helped quite a bit to re-calibrate the H3 to handle the 35" tires. The stock gear ratios work fine for it as well. That said, it would be nice to get a little more power out of the engine but nothing to really complain about.

Running 35's for over a year now and have no issues.

You can change to lower gears if you have the inline 5 cylinder . The programmer changes shift points in your transmission . I have the 5.3 L V8 so no power issues especially with a tune on it but it gets 10 MPG on highway - the transmission needs way more than 4 gears !!

Phillip Abreu I had 315/75/16’s on for a while. Made it have very poor acceleration. They also rubbed in the front. I went down to 295/75/16’s, no rubbing and better acceleration.

Jeep Creep Nope

Misadventures Productions yup

That its a discontinued product?

Send me the specs I weld my own

Unfortunately since this episode was shot a little over 3 years ago, hypertech discontinued the H3 tuner.

I was hoping to buy a used one on ebay, but can't get the model number or correct info for what I need..

@@deathnpink Wish we could help, but we do not have that hummer or the programmer anymore unfortunately