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Lift on composite leaf springs?

HvyChvy334

By HvyChvy334
in Modifications, Wheels & Tires

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pokismoki Senior Enthusiast

pokismoki

Posted
Posted

 i think there was a lot of complaints for the K2 trucks with leaf springs clanking and making noise, GM wouldn't put 21" rims on trucks if they where concerned about unsprung weight

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richard wysong
richard wysong

Yeah I have a great store, they still have paper catalogs as well as the computer which is sometimes the only way to find what you need when it's not a stock part

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HvyChvy334 Enthusiast

HvyChvy334

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Posted
45 minutes ago, AJMBLAZER said:

That’s the bracket on mine. No need for a rounded U bolt here. 
 

 

(Yes, the block’s apparently shifted some. It’s still tight though.)

2B006780-183E-481B-9858-6F82622C1242.jpeg

51F2E949-8722-4436-A965-BD11B5C1607F.jpeg

I’m guessing GM changed up a little bit on the refresh to great another challenge lolE6E12F38-65CD-4B79-AA64-B7E57179769C.thumb.jpeg.1dde1af4a5c7b74d39b1943ba4f94edf.jpeg

newdude Senior Enthusiast

newdude

Posted
Posted
4 minutes ago, HvyChvy334 said:

Yeah apparently my 22 has the mono leaf which is throwing me off a little. I’m not sure how different it is than the pre-refresh other than a single leaf. 

 

1 minute ago, HvyChvy334 said:

I’m guessing GM changed up a little bit on the refresh to great another challenge lolE6E12F38-65CD-4B79-AA64-B7E57179769C.thumb.jpeg.1dde1af4a5c7b74d39b1943ba4f94edf.jpeg

 

 

 

2019-2021 the trucks that had the carbon composite springs, it was just the overload spring (biggest one at the bottom).  It is still a 3 spring leaf pack, 2 are steel, one is composite.  

 

Your truck is the second one online I've seen with this new mono spring.  What trim level is your truck?  Chevy?  GMC?  From the parts catalog I do know that this mono spring design is crew cab short box 4x4 only so far, so not every truck has it.  My LT 2.7HO CC Short for example has the traditional 3 leaf pack all steel.  

HvyChvy334 Enthusiast

HvyChvy334

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Posted (edited)
33 minutes ago, newdude said:

 

 

 

 

2019-2021 the trucks that had the carbon composite springs, it was just the overload spring (biggest one at the bottom).  It is still a 3 spring leaf pack, 2 are steel, one is composite.  

 

Your truck is the second one online I've seen with this new mono spring.  What trim level is your truck?  Chevy?  GMC?  From the parts catalog I do know that this mono spring design is crew cab short box 4x4 only so far, so not every truck has it.  My LT 2.7HO CC Short for example has the traditional 3 leaf pack all steel.  

GMC Elevation with the 5.3 short box 4x4

Edited by HvyChvy334
newdude Senior Enthusiast

newdude

Posted
Posted
1 hour ago, HvyChvy334 said:

GMC Elevation with the 5.3 short box 4x4

 

 

Thanks for that.  

 

Just out of further curiosity, what is the payload on your truck in the door jamb tag?

newdude Senior Enthusiast

newdude

Posted
Posted
On 9/29/2022 at 11:07 PM, HvyChvy334 said:

Has anyone with composite leaf springs lifted the truck? If so, what did you use/do? My understanding is no one has a kit for this and the u bolts are rounded so you can’t use just any block and u bolt from a kit like Zone, BDS, RC, etc. Any experience or thoughts would be greatly appreciated!

 

 

I just realized that you are the one with the single spring truck LOL.

 

To answer your lift question.  For now it would appear that a rear spring conversion would be the only course of action until the lift companies have a lift solution for these trucks that have the new mono leaf.  Flipping through everyone's instructions on a 6 inch lift, they only show standard leaf spring trucks.  

 

GM sells a steel spring kit that's for adding on the 2 inch lift they sell to convert from the trucks that have the 3 leaf that's 2 steel with the lower composite, so you'd need those most likely.  

AJMBLAZER Enthusiast

AJMBLAZER

Posted
Posted

I mean...could always throw a block under the monoleaf.  Get longer U bolts and run with it.  Not sure what the difference would be between the block and the spring perch anyway.

 

Haven't seen a monoleaf like that in a long time.  Ford used to run them under low options, low weight rating 4 cyl, regular cab 2wd Rangers back in the 90's.

HvyChvy334 Enthusiast

HvyChvy334

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Posted (edited)
1 hour ago, newdude said:

 

 

Thanks for that.  

 

Just out of further curiosity, what is the payload on your truck in the door jamb tag?

Max payload is 1690 lbs. It’s a pretty thick leaf. 

Edited by HvyChvy334
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  • 2 weeks later...
SilverMak Enthusiast

SilverMak

Posted
Posted
On 9/29/2022 at 10:07 PM, HvyChvy334 said:

Has anyone with composite leaf springs lifted the truck? If so, what did you use/do? My understanding is no one has a kit for this and the u bolts are rounded so you can’t use just any block and u bolt from a kit like Zone, BDS, RC, etc. Any experience or thoughts would be greatly appreciated!


I’ve got a 2020 LT 5.3 with composite springs. Lifted the back with 1.5 tapered blocks. So far no issues but I’m not doing any heavy off-roading. 

  • 1 month later...
latreille89 Enthusiast

latreille89

Posted
Posted (edited)

Found out my 2022 Sierra I just picked up has this god awful 1 piece spring with the rounded ubolts. Can't bolt up my 2.25" ready lift blocks now that I took off my 21 Silverado. Anyone have a ubolt specs on these? Same 9/16" thickness as the square bolts?

Edited by latreille89
HvyChvy334 Enthusiast

HvyChvy334

Posted
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Posted
On 11/16/2022 at 4:45 AM, latreille89 said:

Found out my 2022 Sierra I just picked up has this god awful 1 piece spring with the rounded ubolts. Can't bolt up my 2.25" ready lift blocks now that I took off my 21 Silverado. Anyone have a ubolt specs on these? Same 9/16" thickness as the square bolts?

That’s what I’m trying to find out too. I don’t want to have to buy new leaf springs. The monoleaf composite spring seems wider than the standard steel springs too so I’m concerned about a block fitting under it. 

HvyChvy334 Enthusiast

HvyChvy334

Posted
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Posted

Does anyone on this forum have a composite mono leaf running with a block under it? I’m hoping I can just buy a rounded U bolt and it will work. 

HvyChvy334 Enthusiast

HvyChvy334

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5 hours ago, richard wysong said:

This was discussed at length very recently, look in the archives

Yeah unfortunately the only thing I can find is the threads with 2 steel leafs with a composite overload spring. Maybe I’m looking in the wrong place on here. 

sharkeysierra Enthusiast

sharkeysierra

Posted
Posted
15 hours ago, HvyChvy334 said:

Yeah unfortunately the only thing I can find is the threads with 2 steel leafs with a composite overload spring. Maybe I’m looking in the wrong place on here. 

One person said they were able. GM does have a leaf spring pack available to purchase for lifts as it states. 

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