2" drop shackles on 72LB - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dukcaln · 11-22-2011, 03:25 PM

so i got some 2" drop shackles, ( I hope deal comes through) and am wondering if that is all I need to drop the rear of the truck. What is involved in the swap and dropping? Is it simply swapping shackles. want to level the truck out. might be able to tell from this photo but it sits a tad higher in back on flat ground.... will i need to trim some off of the front coils?

71 GMCDRVR · 11-22-2011, 03:33 PM

I know that to level the trucks stance you have to go 2 more inches in the rear. So if you drop the rear 2 inches, then cut a coil (which is 2 inched) in the front you will still have a rake to the stance. So I think (don't quote me on this) if you put just the 2" shackles and leave the front alone it should level the truck (depending on how much the front springs have settled)

FYI with an axle flip you can get anywhere from 5" to 7" then you will have to drop the front as well. Djm makes a flip kit for the rear axle and you are actually relocating the rear axle to on top of the leaf springs instead of underneath.

dukcaln · 11-22-2011, 03:38 PM

thanks, parked in the slope you cant tell but on flat surface you can see the difference in height. how simple is the swap. do I need to do anything else other than instal the shackles

71 GMCDRVR · 11-22-2011, 03:53 PM

Honestly at this point I'm not sure I havn't done mine yet and I don't wanna point you in the wrong direction (sorry for the lack of info) but there are alot of guys on here that have a wealth of knowledge on this. Cruise around the suspension threads I am sure you will get all the info you need. Good luck and don't forget pics of the finished product.

I plan on doing a 3/5 drop using an axle flip and drop coils sometime after the holidays. so I will be sure to share

OhioDan · 11-24-2011, 05:44 AM

Tried to put 2" shackles on my LWB GMC. Top of the shackle kepted hitting the bottom of the floor. Went back to stock height. Wished I would have heard about flipping the axle before I finished the truck?

cadillacart · 11-24-2011, 11:39 AM

Just by looking at things, it seems that any longer shackles will hit the bed. Just slam it!

11-22-2011, 03:25 PM	#1
dukcaln Registered User Join Date: Jul 2011 Location: vacaville ca Posts: 1,304	2" drop shackles on 72LB so i got some 2" drop shackles, ( I hope deal comes through) and am wondering if that is all I need to drop the rear of the truck. What is involved in the swap and dropping? Is it simply swapping shackles. want to level the truck out. might be able to tell from this photo but it sits a tad higher in back on flat ground.... will i need to trim some off of the front coils? __________________ 04 CHEVY LLY LS DURAMAX 4WD. MODS TO FOLLOW, EFI LIVE, BUILT TRANS, LBZ MP, LIFT PUMP *SOLD* 1972 chevy c10

11-22-2011, 03:33 PM	#2
71 GMCDRVR Registered User Join Date: Aug 2011 Location: Modesto, Claifornia Posts: 236	Re: 2" drop shackles on 72LB I know that to level the trucks stance you have to go 2 more inches in the rear. So if you drop the rear 2 inches, then cut a coil (which is 2 inched) in the front you will still have a rake to the stance. So I think (don't quote me on this) if you put just the 2" shackles and leave the front alone it should level the truck (depending on how much the front springs have settled) FYI with an axle flip you can get anywhere from 5" to 7" then you will have to drop the front as well. Djm makes a flip kit for the rear axle and you are actually relocating the rear axle to on top of the leaf springs instead of underneath. __________________ Blessings, Ryan G JESUS IS LORD!!!!!! Last edited by 71 GMCDRVR; 11-22-2011 at 03:39 PM.

11-22-2011, 03:38 PM	#3
dukcaln Registered User Join Date: Jul 2011 Location: vacaville ca Posts: 1,304	Re: 2" drop shackles on 72LB thanks, parked in the slope you cant tell but on flat surface you can see the difference in height. how simple is the swap. do I need to do anything else other than instal the shackles __________________ 04 CHEVY LLY LS DURAMAX 4WD. MODS TO FOLLOW, EFI LIVE, BUILT TRANS, LBZ MP, LIFT PUMP *SOLD* 1972 chevy c10

11-22-2011, 03:53 PM	#4
71 GMCDRVR Registered User Join Date: Aug 2011 Location: Modesto, Claifornia Posts: 236	Re: 2" drop shackles on 72LB Honestly at this point I'm not sure I havn't done mine yet and I don't wanna point you in the wrong direction (sorry for the lack of info) but there are alot of guys on here that have a wealth of knowledge on this. Cruise around the suspension threads I am sure you will get all the info you need. Good luck and don't forget pics of the finished product. I plan on doing a 3/5 drop using an axle flip and drop coils sometime after the holidays. so I will be sure to share __________________ Blessings, Ryan G JESUS IS LORD!!!!!!

11-24-2011, 05:44 AM	#5
OhioDan Registered User Join Date: Apr 2002 Location: New Carlisle, Ohio,USA Posts: 1,404	Re: 2" drop shackles on 72LB Tried to put 2" shackles on my LWB GMC. Top of the shackle kepted hitting the bottom of the floor. Went back to stock height. Wished I would have heard about flipping the axle before I finished the truck? Attached Images __________________ LIFE AIN'T EASY WHEN YER FAT AND GREASY! GMC= Got More Class! 1970 GMC LWB, Fleetside, 350/4spd, Flowmaster "40's", 2002 GMC 16" Rallies, cowl hood,and added a bunch of options that weren't there when I started.

11-24-2011, 11:39 AM	#6
cadillacart 1972 C/20 Join Date: May 2005 Location: Santa Rosa, Ca Posts: 273	Re: 2" drop shackles on 72LB Just by looking at things, it seems that any longer shackles will hit the bed. Just slam it! __________________ My Gallery 1972 C/20 402 Gramp's Truck

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