Diff. btw std supension and off-road suspension?

[HummerB]

again............what is the difference between the two transfer cases.......i guess what i am asking is what do the numbers 2:56 and 4:1 mean??

[H3HUMVEE]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by HummerB:
again............what is the difference between the two transfer cases.......i guess what i am asking is what do the numbers 2:56 and 4:1 mean?? </div></BLOCKQUOTE>

Well, in simple terms with the 4:1 for every four revolutions of the input shaft of your transfer case you get one rotation of the output shaft ..So you can reduce your output ratio from your transmission by four to one...

[SledgeHummer]

hehehe H3HUMVEE you bad bad boy, that's the answer he's looking for

What HUMVEE is trying to tell you, the higher the T-case ratio is the stronger the case is. i.e. in rockcrawling condition or extreme offroading conditions the 4:1 case gives a lot more power than the 2.64:1

[Huck BB62]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Steve-SanJose-H3:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by UNOMYFLO:
The adventure package comes as follows:

1) 33" tires
2) 4.56 gear ratio (probbaly due to the larger tire killing the stock gear setup) Plus more offroad ability gearing wise.
3) stiffer suspension and shocks.
4) different (lower) gearing in the transfer case.


UNO </div></BLOCKQUOTE>

I think all H3's have the 4.56 rear end ratio, only the granny gear ratio is different between base and adventure setups.


S. </div></BLOCKQUOTE>

Better check your build sheet. From what I saw at the dealer, 4.56 gears are found on the Adventure package.

Overview

Model:
HUMMER H3

Body style / driveline:
4-door, 5-passenger hard-top 4-wheel-drive

EPA vehicle class:
Midsize sport utility

Construction:
Welded steel frame, electro galvanized steel

Manufacturing location:
Shreveport, Louisiana

Key competitors:
Toyota 4Runner; Jeep Grand Cherokee, Nissan Xterra, BMW X3




Engine
Vortec 3500

Type:
3.5L inline 5-cylinder

Displacement (cu in / cc):
211 / 3460

Bore & stroke (in / mm):
3.66 x 4 / 93 x 102

Block material:
A356-T6 lost foam cast aluminum

Cylinder head material:
A356-T6 lost foam cast aluminum

Valvetrain:
dual overhead camshafts, continuously variable exhaust valve timing, 4 valves-per-cylinder, with dual balance shafts

Ignition system:
distributorless electronic spark, coil-on-plug, platinum-tipped spark plugs

Fuel delivery:
multipoint sequential fuel injection

Compression ratio:
10.0:1

Horsepower (hp / kw @ rpm):
220 / 164 @ 5600 (estimated.)

Torque (lb-ft / Nm @ rpm):
225 / 305 @ 2800 (estimated.)

Recommended fuel:
87 octane

Maximum engine speed (rpm):
6300

Emissions controls:
dual "split converter" design; LEV II

Est. fuel economy (auto city):
16 mpg*

(auto hwy):
20 mpg*


*based on preliminary GM tests

Transmissions
MA5
Hydra-Matic 4L60-E

Type:
5-speed manual
4-speed automatic





Gear ratios (:1):



First:
3.75
3.06

Second:
2.20
1.63

Third:
1.37
1.00

Fourth:
1.00
0.70

Fifth:
0.73
--

Reverse:
3.67
2.29





Stall ratio:
N/A
1.90





Final drive axle ratio:
4.10
4.56

Low range lock gear reduction:
2.64
4.03

Crawl ratio (range):
33 to 69
33 to 69


Chassis/Suspension

Front:
independent SLA torsion bar, 46-mm mono-tube gas-charged shocks, 36-mm tubular stabilizer bar

Rear:
"Hotchkiss" design multileaf, semi-elliptical single-stage leaf spring, 46-mm mono-tube gas-charged shocks, 25-mm rear solid diameter stabilizer bar

Steering type:
power-assisted rack-and-pinion, with tri-bushing mount design

Steering ratio:
17:1

Steering wheel turns, lock-to-lock:
3.25

Turning circle, curb-to-curb (ft / m):
37 / 11.3


Brakes

Type:
electro-hydraulic power 4-wheel disc, 4-wheel anti-lock, four-piston opposed (fixed) front caliper/ single piston sliding rear caliper with Dynamic Rear Proportioning




Rotor diameter x thickness (in / mm):


Front:
12.4 x 1.1 / 315 x 28

Rear:
12.28 x 0.47 / 312 x 12




Total swept area (sq in / sq cm):


Front:
69.4 / 448

Rear:
51 / 328


Wheels/Tires

Wheel size & type:
16-inch x 7.5-inch aluminum

Tires:
std: P265/75R16 all terrain steel-belted Goodyear radials


opt: LT285/75R16C on-/off-road Bridgestone radials (with ZM6 Off-Road Adventure package)


Same full-size spare as the tires on the vehicle


Dimensions

Exterior:


Wheelbase (in / mm):
111.9 / 2842

Overall length w/ spare and 33-inch tires (in / mm):
186.7 / 4742

Overall width (in / mm):
85.5 / 2170.5

Overall height (in / mm):
74.5 / 1893

Track (in / mm):


Front:
65 / 1651

Rear:
65.5 / 1664

Minimum ground clearance front (in / mm):
9.1 / 231

Step-in height (in / mm):


Front:
w/ 32-inch tires: 24 / 609.2

w/ 33-inch tires: 24.7 / 609.2

Rear:
w/ 32-inch tires: 24.5 / 623.5

w/ 33-inch tires: 25.3 / 643.5

RTI
21.7

Approach angle (degrees):
w/ 32-inch tires: 38

w/ 33-inch tires: 40

Departure angle (degrees):
w/ 32-inch tires : 36

w/ 33-inch tires: 37

Breakover angle (degrees):
w/ 32-inch tires: 24

w/ 33-inch tires: 25




Grade capability (percent):
60

Side slope capability (degree):
40

Water fording capability (in/ mm):


(at 20 mph / 32 km/h):
16 / 407

(at 5 mph / 8 km/h):
24 / 610




Curb weight (auto trans) (lb/ kg):
4700 / 2132




Interior


Seating capacity:
5

Head room (in / mm):


Front:
w/ sunroof: 39.9 / 1013

w/o sunroof: 40.6 / 1032

Rear:
w/ sunroof: 37.9 / 963.5

w/o sunroof: 39.9 / 1013

Leg room (in / mm):


Front:
41.9 / 1063

Rear:
35 / 890

Shoulder room (in / mm):


Front:
54.4 / 1381.3

Rear:
53.5 / 1358

Hip room (in / mm):


Front:
53.9 / 1370

Rear:
53.5 / 1358


Capacities




Cargo capacity (rear seat up) (cu ft / L):


Rear seat up:
29.5 / 835.3

Rear seat down:
55.7 / 1577




Cargo area length (at floor) (in / mm):


Rear seat up:
32 / 810.5

Rear seat down:
63.5 / 1614

Cargo area height (rear floor to headliner) (in/mm):
37 / 939

Cargo area width between wheelhouses (in / mm):
42.1 / 1070

GVWR, standard (lb / kg):
5850 / 2654

Payload, base (lb / kg):
1150 / 521.6 (estimated)

Fuel tank (gal /L):
23 / 87

Engine oil (qt / L):


5-speed manual:
6 / 5.7

4-speed automatic:
6 / 5.7

Maximum trailer weight (lb / kg):
4500 / 2041 (estimated)

Maximum tongue weight (lb / kg):
Up to 400 / 182 (estimated)

[f5fstop]

last night was a bad night

[HummerJim]

I agree with the previous posts and wish I would have gotten the Adventure package in June! It's a bargain for all they give you. I also believe the salesman told me the Adventure has one more leaf or thicker leafs?? They only had one at the dealer and I thought it rode a little stiffer, but have ridden in an Adventure H3 since, at the Ozark Offroad Bash I can now barely tell the difference in the ride with it and mine. I have added slightly larger offroad tires and with the stock gearing the acceleration has suffered a little, but perhaps the highway mpgs have improved, because I get consistent 17s on the highway. Go with the Adventure Package!

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Huck BB62:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Steve-SanJose-H3:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by UNOMYFLO:
The adventure package comes as follows:

1) 33" tires
2) 4.56 gear ratio (probbaly due to the larger tire killing the stock gear setup) Plus more offroad ability gearing wise.
3) stiffer suspension and shocks.
4) different (lower) gearing in the transfer case.


UNO </div></BLOCKQUOTE>

I think all H3's have the 4.56 rear end ratio, only the granny gear ratio is different between base and adventure setups.


S. </div></BLOCKQUOTE>

Better check your build sheet. From what I saw at the dealer, 4.56 gears are found on the Adventure package.

Overview

Model:
HUMMER H3

Body style / driveline:
4-door, 5-passenger hard-top 4-wheel-drive

EPA vehicle class:
Midsize sport utility

Construction:
Welded steel frame, electro galvanized steel

Manufacturing location:
Shreveport, Louisiana

Key competitors:
Toyota 4Runner; Jeep Grand Cherokee, Nissan Xterra, BMW X3




Engine
Vortec 3500

Type:
3.5L inline 5-cylinder

Displacement (cu in / cc):
211 / 3460

Bore & stroke (in / mm):
3.66 x 4 / 93 x 102

Block material:
A356-T6 lost foam cast aluminum

Cylinder head material:
A356-T6 lost foam cast aluminum

Valvetrain:
dual overhead camshafts, continuously variable exhaust valve timing, 4 valves-per-cylinder, with dual balance shafts

Ignition system:
distributorless electronic spark, coil-on-plug, platinum-tipped spark plugs

Fuel delivery:
multipoint sequential fuel injection

Compression ratio:
10.0:1

Horsepower (hp / kw @ rpm):
220 / 164 @ 5600 (estimated.)

Torque (lb-ft / Nm @ rpm):
225 / 305 @ 2800 (estimated.)

Recommended fuel:
87 octane

Maximum engine speed (rpm):
6300

Emissions controls:
dual "split converter" design; LEV II

Est. fuel economy (auto city):
16 mpg*

(auto hwy):
20 mpg*


*based on preliminary GM tests

Transmissions
MA5
Hydra-Matic 4L60-E

Type:
5-speed manual
4-speed automatic





Gear ratios (:1):



First:
3.75
3.06

Second:
2.20
1.63

Third:
1.37
1.00

Fourth:
1.00
0.70

Fifth:
0.73
--

Reverse:
3.67
2.29





Stall ratio:
N/A
1.90





Final drive axle ratio:
4.10
4.56

Low range lock gear reduction:
2.64
4.03

Crawl ratio (range):
33 to 69
33 to 69


Chassis/Suspension

Front:
independent SLA torsion bar, 46-mm mono-tube gas-charged shocks, 36-mm tubular stabilizer bar

Rear:
"Hotchkiss" design multileaf, semi-elliptical single-stage leaf spring, 46-mm mono-tube gas-charged shocks, 25-mm rear solid diameter stabilizer bar

Steering type:
power-assisted rack-and-pinion, with tri-bushing mount design

Steering ratio:
17:1

Steering wheel turns, lock-to-lock:
3.25

Turning circle, curb-to-curb (ft / m):
37 / 11.3


Brakes

Type:
electro-hydraulic power 4-wheel disc, 4-wheel anti-lock, four-piston opposed (fixed) front caliper/ single piston sliding rear caliper with Dynamic Rear Proportioning




Rotor diameter x thickness (in / mm):


Front:
12.4 x 1.1 / 315 x 28

Rear:
12.28 x 0.47 / 312 x 12




Total swept area (sq in / sq cm):


Front:
69.4 / 448

Rear:
51 / 328


Wheels/Tires

Wheel size & type:
16-inch x 7.5-inch aluminum

Tires:
std: P265/75R16 all terrain steel-belted Goodyear radials


opt: LT285/75R16C on-/off-road Bridgestone radials (with ZM6 Off-Road Adventure package)


Same full-size spare as the tires on the vehicle


Dimensions

Exterior:


Wheelbase (in / mm):
111.9 / 2842

Overall length w/ spare and 33-inch tires (in / mm):
186.7 / 4742

Overall width (in / mm):
85.5 / 2170.5

Overall height (in / mm):
74.5 / 1893

Track (in / mm):


Front:
65 / 1651

Rear:
65.5 / 1664

Minimum ground clearance front (in / mm):
9.1 / 231

Step-in height (in / mm):


Front:
w/ 32-inch tires: 24 / 609.2

w/ 33-inch tires: 24.7 / 609.2

Rear:
w/ 32-inch tires: 24.5 / 623.5

w/ 33-inch tires: 25.3 / 643.5

RTI
21.7

Approach angle (degrees):
w/ 32-inch tires: 38

w/ 33-inch tires: 40

Departure angle (degrees):
w/ 32-inch tires : 36

w/ 33-inch tires: 37

Breakover angle (degrees):
w/ 32-inch tires: 24

w/ 33-inch tires: 25




Grade capability (percent):
60

Side slope capability (degree):
40

Water fording capability (in/ mm):


(at 20 mph / 32 km/h):
16 / 407

(at 5 mph / 8 km/h):
24 / 610




Curb weight (auto trans) (lb/ kg):
4700 / 2132




Interior


Seating capacity:
5

Head room (in / mm):


Front:
w/ sunroof: 39.9 / 1013

w/o sunroof: 40.6 / 1032

Rear:
w/ sunroof: 37.9 / 963.5

w/o sunroof: 39.9 / 1013

Leg room (in / mm):


Front:
41.9 / 1063

Rear:
35 / 890

Shoulder room (in / mm):


Front:
54.4 / 1381.3

Rear:
53.5 / 1358

Hip room (in / mm):


Front:
53.9 / 1370

Rear:
53.5 / 1358


Capacities




Cargo capacity (rear seat up) (cu ft / L):


Rear seat up:
29.5 / 835.3

Rear seat down:
55.7 / 1577




Cargo area length (at floor) (in / mm):


Rear seat up:
32 / 810.5

Rear seat down:
63.5 / 1614

Cargo area height (rear floor to headliner) (in/mm):
37 / 939

Cargo area width between wheelhouses (in / mm):
42.1 / 1070

GVWR, standard (lb / kg):
5850 / 2654

Payload, base (lb / kg):
1150 / 521.6 (estimated)

Fuel tank (gal /L):
23 / 87

Engine oil (qt / L):


5-speed manual:
6 / 5.7

4-speed automatic:
6 / 5.7

Maximum trailer weight (lb / kg):
4500 / 2041 (estimated)

Maximum tongue weight (lb / kg):
Up to 400 / 182 (estimated) </div></BLOCKQUOTE>


Wrong, read the sheet.

All automatics have 4:56 rear ends (both base and adventure). This chart is showing different gearing of AUTO vs. MANUAL tranny.

S.

[f5fstop]

Hate to tell all, but a few weeks ago this popped up in the tech section, and I confirmed with the engineer in charge of axles, and there is only ONE axle ratio offered on the 2006 H3 Hummer; and that is 4.56:1.
This is irregardless of what a marketing sheet has on it. Prior to calling, I had pulled vehicle information build sheets for autos, manuals with and without the off-road package, and found only 4.56 gear listed.

[HummerB]

? so the only diff is the 33 in. tires, stiffer shocks, and 4:1 Tcase?

Then 33in. tire upgrade would not impact a lux package at all? The lux set up with 31 in tires should be getting better accl. than one with the adventure package?

[fourfourto]

? so the only diff is the 33 in. tires, stiffer shocks, and 4:1 Tcase?

Then 33in. tire upgrade would not impact a lux package at all? The lux set up with 31 in tires should be getting better accl. than one with the adventure package?






Front:
w/ 32-inch tires: 24 / 609.2

w/ 33-inch tires: 24.7 / 609.2

Rear:
w/ 32-inch tires: 24.5 / 623.5

w/ 33-inch tires: 25.3 / 643.5

There are no 31 inch tires You get the rear locker also.

[f5fstop]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by HummerB:
? so the only diff is the 33 in. tires, stiffer shocks, and 4:1 Tcase?

Then 33in. tire upgrade would not impact a lux package at all? The lux set up with 31 in tires should be getting better accl. than one with the adventure package? </div></BLOCKQUOTE>

No, another difference is the Eaton Electronic Rear Locker in the axle differential.

Correct, upgrading to 33 in tirs is no problem. As for acceleration, not sure you would be able to tell the difference. Besides the standard tires are 32", off-road are 33." Biggest difference between the tires is the 33s are Bridgstone and are better for off-road than the Goodyear Wrattlers on the standard package.

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by f5fstop:
Hate to tell all, but a few weeks ago this popped up in the tech section, and I confirmed with the engineer in charge of axles, and there is only ONE axle ratio offered on the 2006 H3 Hummer; and that is 4.56:1.
This is irregardless of what a marketing sheet has on it. Prior to calling, I had pulled vehicle information build sheets for autos, manuals with and without the off-road package, and found only 4.56 gear listed. </div></BLOCKQUOTE>


Interesting on the auto vs. manual rear end ratio.

1. A little suspect though, since we are hearing that gearing in 5th gear on the manual tranny is considerably taller than 4th on the auto tranny. Based on the chart above 5th gear should be slightly lower given that rear end ratios are the same.

2. It's very normal for auto and manual setups to have different final drive ratios.

The engineer might be a little drowsy. Nudge him to recheck.


S.

[NEOCON1]

acceleration and hummer in same sentence you guys are a riot . and whoever said lack of power dont you know what these were designed to do ? LOL you guys should get the 32's your trucks will be so fast

[HummerB]

i am not interested in being fast, but i just dont want to hinder stock accl. ect....

[Alan06SUT]

A 4:1 gearbox is like being in the lowest gear on a mountain bike (ie your pealing fast and not going very far, but you can make it up a very steep hill). A 2.56:1 gearbox is like being in a low to middle gear (ie your peading slower, and can't make it up a steep hill, you just dont have the power, so you switch to an easier gear). Same with a lower t case ratio. The 4:1 can crawl and climb better that a 2.56 box. That is why the h3 adventure has plent of power to climb steep ass hills without stalling, even though it has a relatively small motor.

[HummBebe]

I'm about ready to blow a gasket on this one, so I'll KEEP sitting this one out.

Yea Hummer and acceleration in the same sentence is a riot for sure All Hummers are slugs by road car standards, but they were engineered to meet offroad criteria that very few vehicles at any price can match.

But we keep reading about people complaining about the power on the road. Then they add 35" and 37" tires and complain even more as the auto tranny downshifts constantly trying to maintain any speed going up hills. In my opinion H3 power is adequate, but I'm not in a rush to make it even slower.

S.

[HummerB]

thanx steve, that was my exact point/concern.

[f5fstop]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Steve-SanJose-H3:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by f5fstop:
Hate to tell all, but a few weeks ago this popped up in the tech section, and I confirmed with the engineer in charge of axles, and there is only ONE axle ratio offered on the 2006 H3 Hummer; and that is 4.56:1.
This is irregardless of what a marketing sheet has on it. Prior to calling, I had pulled vehicle information build sheets for autos, manuals with and without the off-road package, and found only 4.56 gear listed. </div></BLOCKQUOTE>


Interesting on the auto vs. manual rear end ratio.

1. A little suspect though, since we are hearing that gearing in 5th gear on the manual tranny is considerably taller than 4th on the auto tranny. Based on the chart above 5th gear should be slightly lower given that rear end ratios are the same.

2. It's very normal for auto and manual setups to have different final drive ratios.

The engineer might be a little drowsy. Nudge him to recheck.


S. </div></BLOCKQUOTE>

I should keep out, but I won't. The engineer in question is the head service engineer for this part, he is a manager, he is also in charge of the release of this part to service application. He assured me it was a 4:55:1 gear, and this went right along with all the vehicle history build sheets I pulled up in the system.
In my opinion, I don't need to nudge him. Maybe those with all their innuendos and assumptions should get nudged a bit.

Partial copy of my Build sheet, H3, auto, with off-road package:
G94 - LOCKING DIFFERENTIAL HC4 - REAR AXLE 4.56
JB9 - BRAKE LIGHT JJA - PT DRESS SUBASSEMBLY INSTALLED
JL4 - STABILITRAK-STABILITY CONTROL KA1 - FRONT HEATER SEAT
KG7 - 125 AMP GENERATOR K05 - ENGINE BLOCK HEATER
K34 - CRUISE CONTROL L52 - 3.5L DOHC 220HP ENGINE
M30 - 4-SPD AUTOMATIC TRANS W/ STABILITRAK-STABILITY CONTROL NP5 - LEATHER WRAPPED STEERING WHEEL
NR6 - 4:1 TRANSFER-CASE NT9 - FEDERAL EMISSION SYSTEM TIER 2


Build sheet of a H3, manual, off-road package:
FE9 - 50-STATE EMISSIONS HC4 - REAR AXLE 4.56
JB9 - BRAKE LIGHT JJA - PT DRESS SUBASSEMBLY INSTALLED
KG7 - 125 AMP GENERATOR K34 - CRUISE CONTROL
L52 - 3.5L DOHC 220HP ENGINE MA5 - MANUAL TRANSMISSION
NR4 - 4WD TRANSFER CASE NT9 - FEDERAL EMISSION SYSTEM TIER 2


These are the actual build sheets produced when the vehicle is run down the assembly line.

[NEOCON1]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by HummBebe:
I'm about ready to blow a gasket on this one, so I'll KEEP sitting this one out. </div></BLOCKQUOTE> LOL cant wait to get my 35's mounted