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  1. #1
    Bald Tire
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    H3 frame question

    So this guy that I'm buying some H3 parts from has said something along the lines of, "these trucks have the strongest frames ever made because of they're made from high carbon steel". Any thoughts on this?

  2. #2
    All Terrain
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    I don’t know if they are the strongest ever but they are made from a high strength steel and are fully boxed. My friend works in collision repair and he tells me that the frames are extremely difficult to pull.

  3. #3
    Mall Crawler

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    There is a weak point. Where the lower control arm meets the frame at the rear bushing. On street accidents, I’ve seen them buckle at that spot. Which required frame replacement. Off road, have never seen that issue. Go figure
    2005 H2 Adventure

  4. #4
    Bogger
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    Quote Originally Posted by Zach View Post
    There is a weak point. Where the lower control arm meets the frame at the rear bushing. On street accidents, I’ve seen them buckle at that spot. Which required frame replacement. Off road, have never seen that issue. Go figure
    Pretty sure that's a design feature to improve crash ratings, though I guess that depends on how severe those accidents were. You can also see a few spots up by the bumper that are designed to buckle the frame to absorb crash energy.
    2008 H3 Alpha
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    "Live free or die: Death is not the worst of evils." - General John Stark

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  5. #5
    Super Swamper
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    H3 frame question

    Wow. As somebody that has cut apart and re-welded several H3 frames...I can promise they are far from “strongest ever made”. In fact...they are very flimsy. So flimsy that certain shelf type winch mounts can bend them during a hard pull.

    The entire front frame from the motor mounts forward is intentionally designed to collapse in a collision. Same for the rear frame rails. I deal with lots of wrecked H3’s and more often than not...a wrecked H3 will need some “massaging” to get bumper bolt holes to line up properly.

    I’m not saying this is a bad thing...it does save lives. But from a builder’s perspective, I would definitely beef up the frame for serious off-roading.

    THORparts frame plates. Laser cut from .250” steel...

  6. The Following 2 Users Say Thank You to 4speedfunk For This Useful Post:

    Panzer07 (10-04-2018), Zach (09-27-2018)

  7. #6
    El Diablo
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    I know the H2 frames can bend from a stump pull as well. I think it's the nature of things now with collision safety.

  8. #7
    Mall Crawler

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    Quote Originally Posted by alrock View Post
    I know the H2 frames can bend from a stump pull as well. I think it's the nature of things now with collision safety.
    Stump pull? Really? I’ve really only seen one stump in pictures and those go way back. Really even wasn’t that big of a stump.

    Just saying! And hi El Diablo. . 🤣
    2005 H2 Adventure

  9. #8
    All Terrain
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    Quote Originally Posted by 4speedfunk View Post
    Wow. As somebody that has cut apart and re-welded several H3 frames...I can promise they are far from “strongest ever made”. In fact...they are very flimsy. So flimsy that certain shelf type winch mounts can bend them during a hard pull.
    Yikes, which types of winch mounts do you recommend to avoid this bending?
    2010 H3T Alpha Offroad - Sonnax 1khp 4L60E - Rocky Road Sliders - GM UCP - AirDoc Intake - GM Performance Exhaust - PCM of NC tune/HPTuners - GM Crossbars - GM Truck Boxes - Scorpworks Steering Rack Bracket - SnugTop Slant Back Canopy - GoodYear Duratrac 35" tires - Odyssey Extreme 25-PC1400T Battery - Stereo: Pioneer DEX-P99RS HU/Biketronics 4180&2250 amps/Dynaudio E650 mids/CSS XBL tweeters/Stereo Integrity BM MKV sub

  10. #9
    Super Swamper
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    THORparts of course. I got five in stock...$1000 with free shipping.

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  12. #10
    Street Tire
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    I'll second the THORparts winch mount.

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    09 H3T Alpha/Adv- |Tuned |Starr Hid |Thor Bumper |Airdoc |UCP |American Roll Tonneau |Arb Compressor |Katzkins |Kenwood |

  13. #11
    Low Profile
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    Sigh.... one day.
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  14. #12
    Bogger
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    Thorparts or ARB. Not really anything else out there aside from custom (or essentially custom, there is a DIY kit I think).

    4speed, speaking of your bumper, I have a mod I'm eventually going to make to mine to put a front receiver tube in just below the fairlead (once I'm done renovating my suspension). Might be something to consider adding as an option.
    2008 H3 Alpha
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  15. #13
    Bogger
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    Quote Originally Posted by 4speedfunk View Post
    THORparts of course. I got five in stock...$1000 with free shipping.

    Any chance you have any Gen1 foglamp mounts laying around? Really want to get a new bumper.
    No one is more professional than I. I am a Noncommissioned Officer, a leader of Soldiers.

  16. #14
    Street Tire
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    Quote Originally Posted by 4speedfunk View Post
    Same for the rear frame rails. I deal with lots of wrecked H3’s and more often than not...a wrecked H3 will need some “massaging” to get bumper bolt holes to line up properly.
    I once pulled a land cruiser from a sand pit using the rear toe hook. I yanked it out harder than I should with more tries than I should, and definitely feel like it affected the frame alignment a little. I always had a slight vibration that I could never get rid of at 60mph, its now increased and I regret it.


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    2009 HUMMER H3 - V8 swap on 4.56


 

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