What needs the most improvement on your H2?

[unaslob]

I got the compressor that is used for the airhorn that 4wheeldriveacc provides... I bought the compressor from component parts in indiana... the tank I got from them as well.. I went with the 14 inch tank.. the one that 4wheeldriveacc has is too small not very functional...especially if you want to use the horn... plus if you want to use it too fill tires up...

the compressor is under the hood.... the tank is in the rear...actually mounted right where the factory compressor would go... the connection that the 4wheeldriveacc uses for tires is pretty lame... so I had quick disconnects installed in the front next to the tow hook, and in the rear next to the hitch... this great. I would not ever have done it differently.. I have pics.. have to scan them in...hopefully this weekend.. look for a different topic on my install... una

[89vette]

The H2 weighs 620lbs more than the EXT and has 30 more horses and I think 20 more ft lbs of torque. Plus it does not have as big a tire. The H2 does have 4:11 gears and that should make up for the larger tire. When I jump in the Escalade, I feel like I am driving a go cart. The steerign is so light and it has so much more power.

03 Sunset H2!
89 Vette
02 Escalade

[MountainH2]

Even if he is a troll from a foreign manufacturer, who cares? Where do people look for full-size Trucks and SUV's? American. The foreign jobs are known for econo-box cars, not full-size Trucks/SUV's.
If it's someone else looking for juice, let them. It's not going to change the way we all feel/love about the Hummer.

Improvements
- More Power (diesel Option)
- Beef up the front suspension. Seems to be a weak point.

Yes, there's a lot of plastic, but didn't they build the H2 with the Aftermarket in mind? The H2 has to be one of the biggest Accessory vehicles on the road. You can practically rebuild the thing with all the Accessories floating around.

I still love it!!!

[John D]

OK 89Vette an GM guy, but where is our missing horsepower and how do we get it back without buying a blower?
John D 03 H2

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by 89vette:
The H2 weighs 620lbs more than the EXT and has 30 more horses and I think 20 more ft lbs of torque. Plus it does not have as big a tire. The H2 does have 4:11 gears and that should make up for the larger tire. When I jump in the Escalade, I feel like I am driving a go cart. The steerign is so light and it has so much more power.

03 Sunset H2!
89 Vette
02 Escalade
<HR></BLOCKQUOTE>

[89vette]

To achieve the same power to weight ratio the Escalade has, you would need about 385 HP. That is about 70 more HP than we have now. Your not going to get that with an exhaust, air intake and a reprogrammed PCM. Just don't buy it. My Vette has 450+ streetable HP and is bored and stroked to 396 cubic inches (was 350). Besides a blower (which I would not want), you get your biggest bang with ported heads and a better cam along with the air intake, exhaust and recalibrated PCM. Of course the best way to gain power is displacement. Remember there is no replacement for displacement. Yank the 6.0L, bore it, install a Lunati forged crank, rods and forged pistons for 427 cubic inches. Have your heads CNC ported. Install a matching cam, headers and a cat back exhaust and now your talking some serious power. If you don’t go crazy and install a nice street cam, your looking at probably 450-475 HP with over 500 lbft of torque. Yea baby!

03 Sunset H2!
89 Vette
02 Escalade

[2slo4now]

I wish that the transfer case from the hd1500 and 2500 was standard in the H2. The ability to shift out of 4wd would improve the MPG and performance drastically.

Dan from Alabama

Doesn't snow much down here. Don't mud ride very often either.

[buddy]

Another thread on Caddy vs H2 Horsepower

http://www.elcova.com/groupee/forums?a=tpc&s=2826088551&f=6706011751&m=241602100 2

[89vette]

That thread contains bogus info.

The motors in the Caddy and H2 are itentical in bore and stroke. The intake and for the most part the exhaust are the same. The Caddy has a higher compression ratio and a more aggressive cam profile than the H2 motor. I'm sorry but in my experiance, PCM programming will not give you big HP gains. What it will do is maximize your HP when you make drastic changes to your combination. I am talking about custom programming and not Hypertech. I program chips for C4 Corvettes. The things you tweak are timing advance and you lean out the top end. GM set the wide open throttle settings rich because rich is safe (less chance for detonation). There are some other tricks too. If you increase the compression ratio it will be more prone to detonation and you need to run a higher octane fuel. Same goes for increased ignition timing.

I think the real reason the H2 does not have more power than the Escalade is becasue the Escalse is the flagship SUV from GM. Not the Hummer....sorry. Remember the Escalade slogan? Most powerful SUV on the planet? Of course the Cayanne I think wins that if you consider it an SUV.

03 Sunset H2!
89 Vette
02 Escalade

[Drag]

OK, Uniblack. If you do indeed work for GM, then perhaps you could confirm or deny the following;

The last week to order Sage Green or Sunset Orange on an H2 will be 11/3/03. These colors are to be discontinued.

The Lux series will from now on INCLUDE the third row seat as part of the package, and also tail lamp protection will be included in the Lux.

Got any answers for those?

Oh, and p.s., when does the licorice dispenser become a free flow option? I've heard 05.

Corvette= "The ability to pass with class"

[John D]

89 Vette, what are the differences between the H2 6.0 and the Caddy 6.0, where is that missin HP?
John D. 03 H2, 03 C5 convert, 02 ML55, 02Royale Prevost XLII, seems listing rides is in fashion ML55 is the wifes
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by John D:
OK 89Vette an GM guy, but where is our missing horsepower and how do we get it back without buying a blower?
John D 03 H2

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by 89vette:
The H2 weighs 620lbs more than the EXT and has 30 more horses and I think 20 more ft lbs of torque. Plus it does not have as big a tire. The H2 does have 4:11 gears and that should make up for the larger tire. When I jump in the Escalade, I feel like I am driving a go cart. The steerign is so light and it has so much more power.

03 Sunset H2!
89 Vette
02 Escalade
<HR></BLOCKQUOTE><HR></BLOCKQUOTE>

[89vette]

Look a couple posts up.

03 Sunset H2!
89 Vette
02 Escalade

[John D]

89 Vette, I see you tell me how to get more HP, what i would like to know is where is the HP the Caddy has and the H2 does not have? Seems like this is the same motor, could it just have poor air and exhaust flow or does the Caddy have different internal parts (cam, heads, etc)? maybe the GM guy can answer this one.
John D.
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by John D:
89 Vette, what are the differences between the H2 6.0 and the Caddy 6.0, where is that missin HP?
John D. 03 H2, 03 C5 convert, 02 ML55, 02Royale Prevost XLII, seems listing rides is in fashion ML55 is the wifes
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by John D:
OK 89Vette an GM guy, but where is our missing horsepower and how do we get it back without buying a blower?
John D 03 H2

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by 89vette:
The H2 weighs 620lbs more than the EXT and has 30 more horses and I think 20 more ft lbs of torque. Plus it does not have as big a tire. The H2 does have 4:11 gears and that should make up for the larger tire. When I jump in the Escalade, I feel like I am driving a go cart. The steerign is so light and it has so much more power.

03 Sunset H2!
89 Vette
02 Escalade
<HR></BLOCKQUOTE><HR></BLOCKQUOTE><HR></BLOCKQUOTE>

[Dan]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>
89vette said:

The Caddy has a higher compression ratio and a more aggressive cam profile than the H2 motor.
<HR></BLOCKQUOTE>

-------------------------------------------------
SUT on order 12/02. 10 months down, 8 to go!
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[89vette]

Well I did a little more research on this and it turns out I have egg on my face. The LQ4 and LQ9 engines share the same camshaft and as far I can tell now, the same cylinder heads that are based on the LS6 Corvette head. The Escalade as a slightly higher compression. I have some feelers out there to some people that should know so I'll get back. The difference may be in the higher compression and more aggressive tune. I run 87 octane in the Escalade with no problems.

03 Sunset H2!
89 Vette
02 Escalade

[hummer17]

Get the Nav system right.

Simply use the same setup as the Caddy Escalade - Nav WITH 6-CD changer where the OnStar currently is. Move the OnStar to the rear view mirror.

How hard can that be?

Unbelievable that it takes owners to tell you (GM) the obvious flaws. How you could ever have thought that the 04 Nav setup was complete/good is beyond me.

Get it right in '05 should be your slogan.

[DURAMAX TIM]

Drag racer, the wife's 04 has the licorice despenser in it.
I'll get pics when I can.

Yell'r 04 Lux w/ air, sunroof,F&R brush bars
Traded 03 White Lux
03 GMC D/A CC SLT LB soon to be 04

[DURAMAX TIM]

Found this info on Power train website,

The 6.0L LQ9 is a more powerful evolution of the Vortec 6000, developed for Cadillac's luxury sport utility vehicles. GM Powertrain engineers delivered a cost-effective, assembly-efficient alternative to distinguish the 6.0L LQ9 from the LQ4 and deliver the additional power Cadillac wanted: flat-top pistons that increase the compression ratio from 9.4:1 (for the LQ4) to 10.0:1. The Vortec H.O. 6000 gives Escalade and EXT class-leading power at less cost to the customer than competitors’ overhead cam engines. In short, the 6.0L LQ9 is a premium engine befitting a premium brand.

Also this,
FLOATING-PIN PISTON FOR LQ4
The Vortec 6000 (RPO LQ4) is fitted with new floating-pin pistons. Introduced on the Vortec H.O. 6000 (RPO LQ9) for 2002, these pistons feature wrist pins that “float” inside the rod bushing and the pin bores in the piston barrel. Other Vortec V-8s use a fixed-pin assembly, in which the connecting rod is fixed to the piston’s wrist pin, and the pin rotates in the pin bore. In the Vortec 6000s, snap rings retain the wrist pin in the piston, while the rod moves laterally on a bushing around the pin. The floating-pin assembly allows tighter pin-to-pin bore tolerances and reduces noise generated during engine operation.

Application of floating-pin pistons in the Vortec 6000 is accompanied by a changeover, begun in model year 2003, to re-profiled polymer-coated pistons. The polymer material allows tighter piston to cylinder-bore clearances without bore scuffing, extending the benefits of the floating-pin piston and rod assembly and reducing noise generated by the piston’s movement within the cylinder. The net result is a quieter engine.

Here's the site,
http://media.gm.com/division/2004_pr...uck/index.html

Yell'r 04 Lux w/ air, sunroof,F&R brush bars
Traded 03 White Lux
03 GMC D/A CC SLT LB soon to be 04

[unaslob]

89vette,
have you been dabbling with the idea of boring out your h2 engine... that would be the best idea of them all... forget intakes superchargers, programmers...is there anybody out there that has done such a thing??? una

[Frank Hewitt]

the front pillars, which are reminescent of the H1 (which is their reason for being on the H2) are good looking-- yet these are what I've found to be most commonly the reason for wind noise coming from the outside while at highway speeds.

gasman

[Frank Hewitt]

not just the wind noise, but actually causing vibration and queaking noise.

gasman