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Old 08-27-2017, 11:46 AM   #1
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72 1/2 ton 4x4 ?

I pulled a trailer yesterday hauling a truck for the first time and it really caused the rear end to squat down badly .I want to add some helper springs ,where do I start ?
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Old 08-27-2017, 12:22 PM   #2
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Re: 72 1/2 ton 4x4 ?

I would add some air bag helpers...I've got them on 3 of my trucks now...they work great...when aired down you never know there on the truck..only drawback is you need a air source but I've got one of those small 12v compressors that also works great.
the first set I had was firestone and they leaked..I've got all airmaxx now and have had no issues...

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Old 08-27-2017, 12:26 PM   #3
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Re: 72 1/2 ton 4x4 ?

Will that work on a leaf spring truck ?
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Old 08-27-2017, 12:30 PM   #4
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Re: 72 1/2 ton 4x4 ?

like this.. unless you find one specific to your truck...http://www.ebay.com/itm/Rear-Air-Bag...-/121612192398
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Old 08-27-2017, 12:33 PM   #5
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Re: 72 1/2 ton 4x4 ?

on my 99 and my 13 1/2ton trucks they are the bolt on kit...on my 81 1ton I used the weld on kit
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Old 08-27-2017, 12:33 PM   #6
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Re: 72 1/2 ton 4x4 ?

That seems to be an option or add a leaf .
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Old 08-27-2017, 12:34 PM   #7
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Re: 72 1/2 ton 4x4 ?

Got any pics of the bolt on versions installed ?
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Old 08-27-2017, 12:39 PM   #8
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Re: 72 1/2 ton 4x4 ?

this is under my 13 z71...
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Old 08-27-2017, 12:42 PM   #9
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Re: 72 1/2 ton 4x4 ?

Very helpful ,Thankyou .
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Old 08-27-2017, 01:11 PM   #10
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Re: 72 1/2 ton 4x4 ?

Another option - I have LP-35 overloads on my K20. http://www.hellwigproducts.com/produ...ad-pro-series/
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Old 08-27-2017, 02:39 PM   #11
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Re: 72 1/2 ton 4x4 ?

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Originally Posted by Stocker View Post
Another option - I have LP-35 overloads on my K20. http://www.hellwigproducts.com/produ...ad-pro-series/
I have the LP-25 overloads. Over the spring overloads are much better riding than under spring overloads and they allow you to adjust tension for control.

Airbags are great as they allow adjustable control over the load and empty ride is unaffected but they are the priciest option.

Underspring overload springs are the cheapest option but offer the worst empty ride as they always have the rear springs stiff.
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Old 08-27-2017, 07:46 PM   #12
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Re: 72 1/2 ton 4x4 ?

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Originally Posted by snj8198 View Post
I have the LP-25 overloads. Over the spring overloads are much better riding than under spring overloads and they allow you to adjust tension for control.

Airbags are great as they allow adjustable control over the load and empty ride is unaffected but they are the priciest option.

Underspring overload springs are the cheapest option but offer the worst empty ride as they always have the rear springs stiff.
Well said and I agree on all points.
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Old 08-27-2017, 07:52 PM   #13
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Re: 72 1/2 ton 4x4 ?

Any idea of cost for the LP-25 overloads as I saw no pricing ?
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Old 08-27-2017, 08:59 PM   #14
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Re: 72 1/2 ton 4x4 ?

found these flashed..https://www.summitracing.com/search/...MobileSwitchNo
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Old 08-27-2017, 09:15 PM   #15
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Re: 72 1/2 ton 4x4 ?

Thanks guys .
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Old 08-28-2017, 07:59 AM   #16
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Re: 72 1/2 ton 4x4 ?

I've used the Air Lift auxiliary springs (air bags) in a few applications. That add up to 1500# extra of true capacity when aired up and it's like they aren't there when aired down. I have used them on a 1t '92 rather than re-arch the tired leafs. I leveled the truck back up, w/o making ride harsh, and had better than new towing abilityby adding air.

I never used an onboard compressor. I'd air up at home before the haul or stop at a service station when out. Add-A-Leafs I feel do very little toward adding capacity. At least that's my experience. I've never used the helper springs, but adding capacity is their purpose and Hellwig makes stuff that works. Add-A-Leafs are about the lift
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Old 08-28-2017, 05:13 PM   #17
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Re: 72 1/2 ton 4x4 ?

and another plus to the bags is I can comtrol the height of my truck depending on the load....4 wheeler in bed doesn't need as much air as my 20ft trailer with a load on it...whatever the load I just air up til truck sits level..
and if I'm not at home I just use my cigarette lighter air pump...
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Old 08-29-2017, 11:42 AM   #18
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Re: 72 1/2 ton 4x4 ?

I pull 10,000 lbs regularly with my pickup. I have 2" Tuff Country EZ rides with the LP 25 OL's in the pic. I have rolled across the scales at 19,890 with a fifth wheel. The truck weighs 6,200lbs. I hit the bolts with a ratchet when i want more preload and back them off when i dont. The only thing i recommend is keeping a bit of preload on those springs even when not loaded because if not they will bounce off the spring pack. This happened to me on back road/off road and over wash board. Other than that they have worked very well for the price.
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Old 08-31-2017, 06:03 PM   #19
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Re: 72 1/2 ton 4x4 ?

Quote:
Originally Posted by special-K View Post
I've used the Air Lift auxiliary springs (air bags) in a few applications. That add up to 1500# extra of true capacity when aired up and it's like they aren't there when aired down. I have used them on a 1t '92 rather than re-arch the tired leafs. I leveled the truck back up, w/o making ride harsh, and had better than new towing abilityby adding air.

I never used an onboard compressor. I'd air up at home before the haul or stop at a service station when out. Add-A-Leafs I feel do very little toward adding capacity. At least that's my experience. I've never used the helper springs, but adding capacity is their purpose and Hellwig makes stuff that works. Add-A-Leafs are about the lift
yep same.

try to buy a set of airbags from a company that warranties them for life, mine started cracking after like 4-5 years, i had the original box just not the receipt and they replaced them free of charge
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Old 09-01-2017, 04:13 PM   #20
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Re: 72 1/2 ton 4x4 ?

I have bags on my Duramax. I paid a little extra & got a set w/ jouncers inside so they can be run 0 psi if need be & won't hurt the bags. I forget if Air Lift or Firestone...
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Old 09-01-2017, 05:12 PM   #21
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Re: 72 1/2 ton 4x4 ?

I didn't know that was offered. What's the minimum pressure, 80psi? I don't remember it being enough to affect the ride. Still a nice feature.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

'67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi...project 'Driver Quality'
'72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok...'The 72'
Tim

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R.I.P. East Side Low Life __________ R.I.P. El Jay_____________ R.I.P. 72BLUZ _____________
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Old 09-01-2017, 06:26 PM   #22
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Re: 72 1/2 ton 4x4 ?

80psi? nonono..them things would be aired all the way up..aired down pressure for the firestones is 5psi recommended. .
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Old 09-01-2017, 06:31 PM   #23
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Re: 72 1/2 ton 4x4 ?

this is from their site.
When not needed the minimum air pressure you need to keep in Ride Rite air bags is*5 psi*to prevent them from damaging themselves. When you are towing you basically want to inflate the bags till the suspension on your vehicle sits level again. Whatever psi accomplishes that would be the correct amount.
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Old 09-02-2017, 08:18 AM   #24
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Re: 72 1/2 ton 4x4 ?

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I didn't know that was offered. What's the minimum pressure, 80psi? I don't remember it being enough to affect the ride. Still a nice feature.
on the air ride bags i use if i pump them up to 30psi it lifts the back of the truck up like 2 inches, thats usually where i set it at when pulling a car/truck on the trailer really levels it out. i think 60 was the max.

the directions really dont give you a setting you just kinda try different pressures and see what works, i usually have them at 10 when im empty
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Old 09-02-2017, 12:15 PM   #25
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Re: 72 1/2 ton 4x4 ?

It's been a while since I've used them. I just remembered the 80psi number. Makes sense that would be pretty dang inflated. I've used them inside coils as well as the auxiliary ones with leafs. want to get some for my '72 once I deal with the rear suspension. I lifted by using add-a-leafs and 2" blocks due to low budget. I didn't like the fit of the u-bolts with blocks so I went with Ruff Stuff top plates and u-bolts. Real HD stuff, but now the plates bottom out with a modest load. I also was concerned that EZ-rides may not handle as much weight, yet didn't want a harsh ride. I'll go with the 4" EZ-rides and air bags at some point. Them there are the tight riding front springs I bought. Don't want hard front/soft rear, so need front EZ-rides. In the end, it is costing more to be cheap.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

'67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi...project 'Driver Quality'
'72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok...'The 72'
Tim

"Don't call me a redneck. I'm just a rough cut country gentleman"

R.I.P. East Side Low Life __________ R.I.P. El Jay_____________ R.I.P. 72BLUZ _____________
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