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2500 HD Front end sag

Discussion in 'Chevy Trucks' started by Zrxpilot, Nov 11, 2013.

  1. Zrxpilot

    Zrxpilot Member
    Messages: 34

    Bought a new 8-6 V for my 2500hd. Std cab long box. The front end sags more then I like. Big block gasser/Allison auto is probably adding to this but I see others with heavier duramax engines running similar weighted plows. Truck is solid with fairly low miles.

    Kneejerk reaction is to crank up the torsion bars and add Timbgrens (sp???)in addition to the 700lbs of sandbags I put in the back near the tailgate.

    It seems that doing that would help the problem but wondering what other options are out there. Read some are running airshocks/airbags with mixed results.


    Thanks in advance
     
  2. REAPER

    REAPER 2000 Club Member
    from 60050
    Messages: 2,228

  3. Diesel Dan

    Diesel Dan Senior Member
    Messages: 218

    couple turns on bars and timbrens
     
  4. Zrxpilot

    Zrxpilot Member
    Messages: 34

    Still on the fence of what to do here. Seems every option has its pros and cons.

    Timbrens, cranking up the torsion bars and then alignment probably set me back 300 by the time its all done. Mixed reviews regarding reliability and potential damage to other components.

    Airshocks (assuming firestone level rite?) I see can be found for about 600 bucks. Mixed reviews regarding reliability here too. I would guess this option does not need an alignment? My current shocks are 9 years old and have just over a 100k on them. Probably due for new ones anyways. This helps me justify these airshocks if that is the ticket.

    It appears welding gussets to the upper control arms are a good idea no matter which route I go. Procedure looks simple enough and I have the equipment to do it. This necessary for the hobbyist?

    Reaper mentioned a short lift kit. Any particular kit?



    Truck is my daily driver. It rides ok now but wouldn't want to make it ride too much worse.
     
  5. Whiffyspark

    Whiffyspark 2000 Club Member
    from SOMD
    Messages: 2,402

    Just crank torsion bars and be done with it. You need an alignment.

    Reliability and crap is all a wash. Someone is going to come in here saying you need lift keys. You don't. Just turn the 18mm bolt and be done with it.

    Airshocks are expensive. They're popular in the jeep crows
     
  6. eastcoastjava

    eastcoastjava Senior Member
    from Boston
    Messages: 165

    Spray the bolts with penetrating, jack the front end up, turn the bolts easy as that. But i wouldn't go to the extreme setting. Alignment is a good idea, unless you want to toast your tires like i am doing to my crappy ones.
     
  7. Zrxpilot

    Zrxpilot Member
    Messages: 34

    Thanks much for the help. Decided on Timbrens, new KYB Monomax shocks and some pre-made gussets from one of the regulars here. Doing an alignment when its all sorted.


    Looking forward to putting it all together.
     
  8. Grambo170

    Grambo170 Junior Member
    Messages: 26

    check out the attachment first is after second is before use house to see difference was getting dark. I just lifted the front by 2 inches, Jacked one side up counted turns on screw measured from ground to bottom of fender did same to other side done in all of 10 mins.
    Having plow put on truck this Friday :D ,will get alignment next week after front end settles down with new adjustment. Big Thanks to B&B for his help.

    truck cranked up 2 inches.JPG

    truck before lift.JPG
     
  9. Grambo170

    Grambo170 Junior Member
    Messages: 26

    Here's two more pic's of measurements I took before and after, I turned bolt 8 rotations. Hope this helps, Plus The ride still feels the same little firmer but that's how I like it anyways wesport

    drivers side measurement before crank.JPG

    drivers side measurement after 8 turns.JPG
     
  10. 2006Sierra1500

    2006Sierra1500 PlowSite.com Addict
    Messages: 1,758

    Those torsion bars are meant to be adjusted for plow use anyways, first time I've seen someone actually crank the bars on a 11+. These trucks hold plows great.
     
  11. Grambo170

    Grambo170 Junior Member
    Messages: 26

    Had an 07 truck which sat level with torsion bars cranked, debated whether to do it or leave it along, I did not like the nose down look and liked the slightly rasied front look, also if it's not working I can always turn them back down. I'll post pic's soon of the new plow :D and take some more mesurements with the plow raised and see what happens :mechanic:
     
  12. Triton2286

    Triton2286 Senior Member
    Messages: 653

    Glad your happy with it. Just out of curiosity what's the FGAWR on the 05?

    Your the first person I have seen put a big plow on a NBS Crew Cab, let alone with the 8.1/Allison and when I get a plow for next year I don't want to push it too hard weight wise.
     
  13. chachi1984

    chachi1984 Senior Member
    Messages: 407

    would shock Extension Brackets do anything
     
  14. 2006Sierra1500

    2006Sierra1500 PlowSite.com Addict
    Messages: 1,758

    Not for height, those are so when you adjust the height of the truck you don't need new shocks.
     
  15. 7_below

    7_below Senior Member
    Messages: 245

    You didn't mention the year of the truck..... But I would install a 2" leveling kit and timbrens in front. If you want your rake back, add 1" blocks in the back.
     
  16. Zrxpilot

    Zrxpilot Member
    Messages: 34

    ^ I like that idea. Losing the rake was a negative as the current rake works so well with my 5th wheel camper. I must still be hung up in the 80's because I still like a bit of rake in anything I own. Even got my mustang jacked up with fatties in the back and skinnies in the front. I would do it to my riding lawnmower if I thought it would still cut the grass decent

    Truck is an 05 with a 4500 lb front.
     
    Last edited: Nov 20, 2013
  17. NBI Lawn

    NBI Lawn PlowSite.com Addict
    Messages: 1,797

    I think you're on the right path. When it comes to t-bars the term "crank" is overused around here I think. I would consider a couple turns on the bars as well as the Timbrens. I think it will help the overall ride when not loaded.
     
  18. Triton2286

    Triton2286 Senior Member
    Messages: 653

    Wow that's light. I didn't know the HD's went lower than 4670 which is what mine has.
     
  19. Zrxpilot

    Zrxpilot Member
    Messages: 34

    ^ Truck came from down south. No snow plow prep. Must have been a custom order job as it has all the preferred towing equipment. Not sure what the computer select front suspension is.

    Fully loaded big block standard cab trucks are hard to find. Looked for probably 6 months.

    UY2 PROVISIONS, CAMPER WIRING HARNESS CAMPER & 5TH WHEEL WIRING HARNESS(UY2)8,788

    VR4TRAILER HITCH(WEIGHT DISTRIBUTING PLATFORM) EQLZR HITCH(VR4)50,528

    XHHTIRE FRONT LT245/75R16/E BL R/PE ST ALS(9591207) TIRE(XHH)47,704

    YD3AXLE FRONT (BASE EQUIP) FOR SCHEDULING GVW PLATE FRT AXLE(YD3)81,318

    YD6SPRING,REAR(BASE EQUIPMENT) RR SPRING(YD6)81,318

    Z82TRAILERING PACKAGE(SPECIAL)(REESE TYPE HITCH) PROVISION FOR HD TRAILER EQUIP(Z82)50,526

    Z85CHASSIS PACKAGE,INCREASED CAPACITY CHAS PKG(Z85)81,306

    6GLSPRING COMPTR SELECT FRT LH SUSP(6GL)10,510

    7GLSPRING COMPTR SELECT FRT RH SUSP(7GL)10,510

    C6WGVW RATING(9200 LBS) 9200 LB GVWR(C6W)80,524

    GT4 AXLE,REAR,3.73 RATIO 3.73R(GT4)11,018

    G8 0AXLE,REAR,POSITRACTION,LIMITED SLIP POSITRACTION L/SLIP R/AXL(G80)57,914

    KC4 COOLING SYSTEM,ENGINE OIL ENG OIL CLG(KC4)81,318

    KNP COOLING SYSTEM,TRANSMISSION,HEAVY DUTY HVY DUTY TRANS CLG SYS(KNP)78,472

    K47 AIR CLEANER HIGH CAPACITY HI CAPACITY A/CL(K47)59,528

    K68 GENERATOR,105 AMPERE 105 AMP(K68)59,008

    M74 TRANSMISSION AUTO, 5 SPD, ALLISON, LCT 1000, 3.24 1ST ALLISON 5-SPD A/TRANS(M74)10,180

    NP2 TRANSFER CASE,MANUAL SHIFT CONTROL,TWO SPEED MAN SHFT TRFER CASE(NP2)34,574

    NT9 EMISSION SYSTEM FEDERAL, TIER 2 PHASE-OUT TIER 2 PHASE-OUT FED EMIS(NT950,282

    NZZ PACKAGE,OFF ROAD SKID PLATE,SPORT SKID PLT PKG(NZZ)31,544
     
  20. bigmackmiller

    bigmackmiller Member
    Messages: 32

    Have the same combo, but its in a stripped down std cab long box, running timbrens and 1000lbs in the bed real happy only drops about a 1/2in when picking up my 8'6 western mvp.