Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**HeloCrewChief** · 02-11-2020, 06:07 PM

I’m looking to replace the springs on my 1972 K20 3/4 Suburban. All the parts suppliers only list K10 Suburban. Are 3/4 K20 truck lifts the same as the suburban? Does anyone have a link to a kit with springs and shocks that will work on my Suburban? Thank you.

Bigdav160 · 02-11-2020, 08:15 PM

2" Tuff Country EZ Ride. I had to add an inch block in the rear to level it out. The ride is very firm to harsh even with their premium shocks.

*randy500* · 02-11-2020, 10:50 PM

K10 and K20 use the same front springs. Factory was either 2 leaf standard or 3 leaf heavy duty.
Rear springs i dont know for sure but i think K10 and K20 are the same length so as far as lift springs they should interchange, if you need to know for sure i have a stock 72 K10 and K20 in the back yard and i could measure and count leafs, i hinkni already did and they were same length and width.
Rear u bolts are obviously different.

**HeloCrewChief** · 02-12-2020, 01:01 PM

I think the 2.5” lift is too high for me. Looks like my truck has a sagged out spring with block. I’d like the keep the same height. May take my springs and blocks in to have a spring made for that height.

**HeloCrewChief** · 02-12-2020, 01:03 PM

Suburban

Bigdav160 · 02-12-2020, 10:13 PM

IIRC the factory front springs have a negative arch like that. Blocks in the front - no bueno

What's in the rear?

mcmlxix · 02-13-2020, 03:37 AM

Do not use block in the front.
Very dangerous....

If you upgraded to a 2.5" lift and removed the blocks you would be close to where you are now. You can adjust slightly with shackle lengths...

If you want a comfortable ride, look into Deaver springs. They aren't cheap but they can make custom build a spring pack to make it ride smooth... Multiple thin springs give the softer ride...

Talk to Offroad Design as well... https://www.offroaddesign.com/ord-li...t-springs.html

oski6754 · 02-13-2020, 01:16 PM

2" Tuff Country EZ Ride has worked well for me. No rougher than stock springs, in my opinion.

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CG · 02-24-2020, 11:15 AM

Have you figured out which way you are going to go on this yet? Im waiting to see what you come up with before I pull a trigger on mine.

**HeloCrewChief** · 02-25-2020, 12:22 AM

Ended up going to Rightway spring in Tacoma. They had a 3 pack leaf spring in stock. Got them bolted in but, engine is still out so I have not driven it yet. So far, their 3 spring pack spring sits at very close to the same height I had before with a 1” block and sagged out old spring. I was very happy with them and the springs are made in the USA. Bought new bushing and u bolts from them as well. Was nice to have a local place to go to.

**HeloCrewChief** · 02-25-2020, 12:24 AM

Here is a picture after I got the driver side in. Also grabbed a Redhead steering box. It’s nice having them local as well. I’ve used their boxes in 3 other vehicles and have been very happy with them.

CG · 02-25-2020, 11:25 AM

So what did you tell Rightway you were looking for, stock height, 72 K20 burb?

They also had the Redhead steering boxes?

And if you don't mind could you tell me what you walked away with all this stuff for money wise?

You can shoot me a PM or a text if you don't want it out there for some reason … thanks

02-11-2020, 06:07 PM	#1
HeloCrewChief Senior Member Join Date: Aug 2010 Location: North Alabama Posts: 1,056	Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 I’m looking to replace the springs on my 1972 K20 3/4 Suburban. All the parts suppliers only list K10 Suburban. Are 3/4 K20 truck lifts the same as the suburban? Does anyone have a link to a kit with springs and shocks that will work on my Suburban? Thank you. __________________ 1970 C10 to K20 conversion 1974 GMC Jimmy 1968 50th Anniversary Short Bed 1968 Chevelle 1964 Comet Caliente 1990 W250 Cummins

02-11-2020, 08:15 PM	#2
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 2" Tuff Country EZ Ride. I had to add an inch block in the rear to level it out. The ride is very firm to harsh even with their premium shocks. Attached Images __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

02-11-2020, 10:50 PM	#3
randy500 Account Suspended Join Date: Jul 2016 Location: Tacoma, WA Posts: 6,873	Re: Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 K10 and K20 use the same front springs. Factory was either 2 leaf standard or 3 leaf heavy duty. Rear springs i dont know for sure but i think K10 and K20 are the same length so as far as lift springs they should interchange, if you need to know for sure i have a stock 72 K10 and K20 in the back yard and i could measure and count leafs, i hinkni already did and they were same length and width. Rear u bolts are obviously different.

02-12-2020, 01:01 PM	#4
HeloCrewChief Senior Member Join Date: Aug 2010 Location: North Alabama Posts: 1,056	Re: Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 I think the 2.5” lift is too high for me. Looks like my truck has a sagged out spring with block. I’d like the keep the same height. May take my springs and blocks in to have a spring made for that height. Attached Images __________________ 1970 C10 to K20 conversion 1974 GMC Jimmy 1968 50th Anniversary Short Bed 1968 Chevelle 1964 Comet Caliente 1990 W250 Cummins

02-12-2020, 01:03 PM	#5
HeloCrewChief Senior Member Join Date: Aug 2010 Location: North Alabama Posts: 1,056	Re: Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 Suburban Attached Images __________________ 1970 C10 to K20 conversion 1974 GMC Jimmy 1968 50th Anniversary Short Bed 1968 Chevelle 1964 Comet Caliente 1990 W250 Cummins

02-12-2020, 10:13 PM	#6
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 IIRC the factory front springs have a negative arch like that. Blocks in the front - no bueno What's in the rear? __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

02-13-2020, 03:37 AM	#7
mcmlxix Collector of Projects Join Date: Apr 2003 Location: Las Vegas Posts: 3,106	Re: Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 Do not use block in the front. Very dangerous.... If you upgraded to a 2.5" lift and removed the blocks you would be close to where you are now. You can adjust slightly with shackle lengths... If you want a comfortable ride, look into Deaver springs. They aren't cheap but they can make custom build a spring pack to make it ride smooth... Multiple thin springs give the softer ride... Talk to Offroad Design as well... https://www.offroaddesign.com/ord-li...t-springs.html __________________ Rich 1972 K5 Blazer CST Click HERE D60 BIG BRAKE UPGRADE Click HERE

02-13-2020, 01:16 PM	#8
oski6754 Registered User Join Date: May 2009 Location: Los Angeles, CA Posts: 178	Re: Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 2" Tuff Country EZ Ride has worked well for me. No rougher than stock springs, in my opinion. __________________ ========================================== Miles 1972 GMC Suburban K15 - Custom Deluxe

02-24-2020, 11:15 AM	#9
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 20,069	Re: Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 Have you figured out which way you are going to go on this yet? Im waiting to see what you come up with before I pull a trigger on mine. __________________ … … … … … … … … ... … … … … … … … … … … …

02-25-2020, 12:22 AM	#10
HeloCrewChief Senior Member Join Date: Aug 2010 Location: North Alabama Posts: 1,056	Re: Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 Ended up going to Rightway spring in Tacoma. They had a 3 pack leaf spring in stock. Got them bolted in but, engine is still out so I have not driven it yet. So far, their 3 spring pack spring sits at very close to the same height I had before with a 1” block and sagged out old spring. I was very happy with them and the springs are made in the USA. Bought new bushing and u bolts from them as well. Was nice to have a local place to go to. __________________ 1970 C10 to K20 conversion 1974 GMC Jimmy 1968 50th Anniversary Short Bed 1968 Chevelle 1964 Comet Caliente 1990 W250 Cummins

02-25-2020, 12:24 AM	#11
HeloCrewChief Senior Member Join Date: Aug 2010 Location: North Alabama Posts: 1,056	Re: Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 Here is a picture after I got the driver side in. Also grabbed a Redhead steering box. It’s nice having them local as well. I’ve used their boxes in 3 other vehicles and have been very happy with them. Attached Images __________________ 1970 C10 to K20 conversion 1974 GMC Jimmy 1968 50th Anniversary Short Bed 1968 Chevelle 1964 Comet Caliente 1990 W250 Cummins

02-25-2020, 11:25 AM	#12
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 20,069	Re: Help with 2.5” lift for 1972 K20 Suburban 3/4 4x4 So what did you tell Rightway you were looking for, stock height, 72 K20 burb? They also had the Redhead steering boxes? And if you don't mind could you tell me what you walked away with all this stuff for money wise? You can shoot me a PM or a text if you don't want it out there for some reason … thanks __________________ … … … … … … … … ... … … … … … … … … … … …



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