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#1 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,827
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Can We Remount Stock Spring Hangers To Lower Truck?
Considering lowering the '74 GMC 1/2 ton 2WD next month and not feeling the LMC Truck $150 bucks price tag for their spring hangers.
The goal is 2" drop in the front (via shorter springs) and a complementary 4" drop in the rear with new shackles and spring hangers, new shorter shocks all around, etc. Since we need to cut off the rivets to get the factory spring hangers off, why can't we just drill some new holes in the frame and re mount them higher using some grade 8 bolts? It seems to me like there is room to move them up 2" easy? |
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#2 | |
Registered User
Join Date: Feb 2015
Location: Santa Rosa, Ca.
Posts: 539
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
Quote:
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1977 Chevrolet C/10 Silverado. Step-Side, Factory 454, TH400, 3.73 Posi 12 Bolt. 1975 Chevrolet El Camino. 350, TH400, 3.08 Posi 10 Bolt. |
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#3 |
Registered User
Join Date: Mar 2014
Location: Tulsa, OK
Posts: 281
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
I dont see why you couldn't as long as there is room to without hitting the bed. Just make sure you get both sides the same or else youll have a mean gangsta lean...
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84' C-10 Custom Deluxe 97' & 98' C-1500 Silverados |
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#4 |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,194
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
Absolutely. I've done a dozen or so that way over the last 30 years.
For the rear spring hanger if you put the bottom hole of the hanger (what was) the top hole on the frame - that will be three inches. You will, however, need to add some support for the bottom of the hanger, which I do by shooting the spring shackle eye bolt all the way through the rail (with an appropriate length spacer). The front hanger will need to come straight up even though the hanger is in a "V"configuration. Be careful here because any error fore/aft can result in a skewed rear axle and dogtracking. K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ Last edited by Keith Seymore; 03-16-2015 at 07:11 AM. |
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#5 |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,194
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
Most of you may already know I followed my truck down the assembly line as it was being built.
I knew that a 3/8" grade 8 bolt was the factory repair for a miss hit or missing rivet; since I knew I was going to be lowering my truck by relocating the hangers I asked the guys on the line if they would use all bolts to put the hangers on. They wouldn't do it....so I had to cut the rivets just like every time before. I cussed 'em out with each rivet that I knocked loose. K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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#6 |
Registered User
Join Date: Oct 2010
Location: Ocean Springs, MS
Posts: 1,746
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
I'll bet you did!
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Gary 1971 Chevrolet C/10 1951 GMC 100 1977 GMC C15 1955 Chevrolet 3100 |
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#7 | |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,827
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
Quote:
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#8 |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,827
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
Wow, sounds like you had as much pull as me at my job after 20 years, lol, good to see not much as changed in companies over the last quarter century (they don't listen to you but then come to you to fix it)
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#9 |
Registered User
Join Date: May 2012
Location: 90045 cali
Posts: 567
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
so this with a axle flip and say 3 leaves will net what?
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#10 |
Registered User
Join Date: Jun 2011
Location: Baytown TX
Posts: 2,219
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
About 8in.
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John 82 Chevy Silverado 350ci/TH350 ![]() |
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#11 |
Registered User
Join Date: Dec 2012
Location: Temple City
Posts: 3,587
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
On Ford F100's it is a common trick to flip the mount.
Be sure to use grade 8 hardware with lock washers, and nuts. |
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#12 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,262
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
if you want a factory lowering hanger... I recommend the solution I found while scouring the bone yard... ever found a lowering spring hanger for a suburban... that's cause there isn't one
![]() http://67-72chevytrucks.com/vboard/s...8&postcount=97
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#13 |
Registered User
Join Date: May 2012
Location: 90045 cali
Posts: 567
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
^^^so with the suburban shackles do they mount in the c10 factory spots/position? is your truck posted in the pic running the springs above the axle,or with an axle flip?
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#14 | |
Post Whore
![]() Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,827
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
Quote:
My question is are they rivitted in on the 'Burbans or bolted on, I can't see myself grinding off rivets at Pick N Pull with a cordless angle grinder, so I'm hoping for bolts. |
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#15 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,262
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
nope they are riveted... its easy to cut off rivets. maybe 1-2 minutes of grinding per rivet plus a good metal chisel. all you need to do is cut an X on the head and knock off the remaining bits.. once that X is cut.. its relatively easy.
clint
__________________
1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#16 |
Registered User
Join Date: May 2012
Location: 90045 cali
Posts: 567
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Re: Can We Remount Stock Spring Hangers To Lower Truck?
^^^axle flip or no axle flip?
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