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KY Hummer guy

Hummy

Member
Messages
6
Location
Louisville, KY. USA
Hello fellow Hummer friends. I am about to modify my h3 to boost the horse power and stiffen up the suspension for ultimate rock crawling in luxury. I am going to bounce a lot of ideas off you guys as I do this. My first mod will be adding a throttle body spacer, HP programmer chip, Cold air intake, header, and cross over exhaust. Before I do this I want to know if anyone else has accomplished this horse power upgrade on their 3.7L I5 H3 and what perils and results you can share with me. Also, is there a cam upgrade like the old RV cams of the past?

Thanks!
 

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Bigunit

Hammer Down!
Staff member
Messages
6,561
Location
Arizona
You don't need to do all that if you want the ultimate rock crawling luxury rig. Go for rock protection first, go rock crawling, then decide what engine performance mods add to your style of wheeling. FWIW, you don't need to add any more HP if you plan on focusing on rock crawling.


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alrock

El Diablo
Staff member
Messages
10,677
Location
Scottsdale
Umm, how are you going to achieve a crossover exhaust when you only have one exhaust manifold?

Oh, and welcome to H4O!
 

Hummy

Member
Messages
6
Location
Louisville, KY. USA
The Tim Allen in me says more HP AWWW AWWW AWWW! Before I Rock Crawl the first time, which I hope to be soon. I am going to stiffen up the suspension and rock protection. I'm thinking Ranchero shocks, all around or maybe even going with on board air compressor and air ride suspension. Added benefit will be able to refill my tires with on board air compressor after crawling.
I plan on welding in additional skid plates and rock skids as well as adding Safety roll cage inside. These ideas are all up in the air. As I still use the H3 as my daily driver, I feel I would enjoy the added hp now until I get ready to add the other mods and later get my replacement daily driver for work. Then the H3 will be dedicated to fun.
 

Schwarttzy

Sponsor
Messages
1,390
Location
Rockford IL
Holy crap, slow down there young one. You need to learn some things if this vehicle is going to survive you. First of all, you want the opposite of a stiff suspension if your going to play in the rocks. Second, horse power means jack **** when you shift into 4LO because you'll have so much torque in 4LO it's easy to brake the vehicle. Third, you have no need for a roll cage at this point. Hell you haven't even gone off-road yet. Fourth, does your vehicle have lockers or winch yet? If not, stay off the rocks until you at least learn more or purchase those parts.
 

Hummy

Member
Messages
6
Location
Louisville, KY. USA
LOL. Yeah I am excited about modin the Hummy out with everything. I am ready to start but plan on doing everything over the course of about a year. I am a firm believer that HP is better to be there when you need it rather than not. You don't have to use it to appreciate it. Having to climb out of a hole at 3mph with the weight of the vehicle as your opposing force, is easier done with 330hp than 230hp and all that wonderful torque. I don't mind breaking her so I can fix her and make her better for next time. I agree about the suspension, been looking into what is best and still haven't made up my mind what I want. I could use some good recommends from experienced crawlers.
As for safety, the roll cage will be needed where I plan on offroading on our farm. If I roll her, no big deal. Roll her back over, fire her up and continue on. I need to keep in mind more than just rock crawling where we go. There are creeks, hills, hollars, cliffs, rocks, mud paths and more. Hummy has been off road many times, but never where I wanted to go because the mods needed to make it and return weren't there yet. I am in the process of buying a daily driver and will convert hummy into a full time toy to modify and play with and see just what I can do with her on the farm. Lockers, brush guards, winch, and more are on my list of mods.

Thanks.
 

Schwarttzy

Sponsor
Messages
1,390
Location
Rockford IL
It depends on what t-case you have, but in my h3 Hummer, when I'm in four low it behaves as if it has 880 horse power and 900 ft/lb of torque. Trust me when I say horse power means nothing off-road, only helps you brake parts faster.

I go places with my H3 that scare people half to death. Trust me, I know what scared means. I rock climb, skydive, and have a 636 Ninja. And I have never felt the need to install a roll cage. BUT if you think your going to roll it, you might as well install one.
 
Last edited:

Highatop

Well-Known Member
Messages
600
Location
Florissant, Co.
Holy crap, slow down there young one. You need to learn some things if this vehicle is going to survive you. First of all, you want the opposite of a stiff suspension if your going to play in the rocks. Second, horse power means jack **** when you shift into 4LO because you'll have so much torque in 4LO it's easy to brake the vehicle. Third, you have no need for a roll cage at this point. Hell you haven't even gone off-road yet. Fourth, does your vehicle have lockers or winch yet? If not, stay off the rocks until you at least learn more or purchase those parts.


Agreed and first things first, get rid those nerfbar and get real rockrails and UCP. Protection is everythin. Also, Welcome from Co. Alot of good info and help here.
 

Hummy

Member
Messages
6
Location
Louisville, KY. USA
Great advise guys and Thank You.
I've ordered my first mods today. Stealcraft, Front brush guard with winch mount. K&N Cold air intake, Jet Trottle body spacer and Jet mass air flow sensor, and Magnaflow SS Cat Back exhaust with dual outputs. Hummy goes in for surgery next Wednesday. I will post pics of before and after in the garage section.
 

Bananatank

Well-Known Member
Messages
731
Location
Hammond,la
Whered you get the brushguard with winch mount and how much? if you don't mind me asking


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