3/4 Ton 2" Drop Shackles? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**69 MOD** · 10-11-2015, 10:54 PM

On my 2009 I dropped the rear by using drop shackles, which in turn allowed me to drop the torsion bars in the front.

In my '71 I'd like to drop the rear using the same method but haven't seen a thread showing anyone doing this (I tried searching)

So my question is, has anyone done this and do you have a shackle kit # that they used?
Otherwise I'm getting out the tape to get my spring width and start the hunt...

Just want to drop the rake some...

70's luvr · 10-12-2015, 08:16 AM

I just did it on my 1970 C20. Used these and I pulled one leaf to get it level.

http://www.truckshop.com/product.php?productid=17957
comparison to stock

**69 MOD** · 10-12-2015, 10:38 AM

Exactly what I was looking for!
I wasn't sure that the 73+ ones would work, thanks for the link.

Nice truck!

Thanks,
Chad/69 MOD

70's luvr · 10-12-2015, 10:54 AM

Wait! Just realized it was the C10 shackles I used..same as C20.

https://djmsuspension.com/product/sh1012c-2/

1971 for fun · 10-12-2015, 04:13 PM

I also used the DJMSH1012C2 shackles fit perfect.

**69 MOD** · 10-12-2015, 04:18 PM

Excellent, thank you!

Looks like all the GMC's are getting dropped...lol

72.4me · 10-12-2015, 05:06 PM

I have a 72 chevy c20 can i use the 44.00 vs 70.00 ones are they different on GMC...what's the difference in the 72 vs 73?

1971 for fun · 10-12-2015, 05:17 PM

The leaf springs are a different width.

**69 MOD** · 10-12-2015, 05:41 PM

The first ones listed are for 2.5" wide springs, too big for our trucks.
The springs are 2.25" wide which require the second set listed.

Mike C · 10-12-2015, 08:57 PM

I lowered my 70 C2500 with them years ago, work great. Mine were from ECE and as usual, I highly recommend doing business with them. As mentioned above they should be 2 1/4" wide.

FWIW, the Longhorn truck I had was equipped with 2 1/2" wide leafs in the rear so use the tape measure.

72.4me · 10-13-2015, 11:20 AM

Thanks everyone..nice looking truck 69mod.

10-11-2015, 10:54 PM	#1
69 MOD Senior Member Join Date: May 2013 Location: Lino Lakes, MN Posts: 362	3/4 Ton 2" Drop Shackles? On my 2009 I dropped the rear by using drop shackles, which in turn allowed me to drop the torsion bars in the front. In my '71 I'd like to drop the rear using the same method but haven't seen a thread showing anyone doing this (I tried searching) So my question is, has anyone done this and do you have a shackle kit # that they used? Otherwise I'm getting out the tape to get my spring width and start the hunt... Just want to drop the rake some... __________________ Chad '71 GMC 2500 Custom Ol Blue '72 Custom Deluxe Highlander Stuffed Olive '73 Trans Am '13 Silverado 2500 Duramax Storm Trooper Last edited by 69 MOD; 10-11-2015 at 11:01 PM.

10-12-2015, 08:16 AM	#2
70's luvr Registered User Join Date: Nov 2013 Location: Spring Hill,Fl Posts: 223	Re: 3/4 Ton 2" Drop Shackles? I just did it on my 1970 C20. Used these and I pulled one leaf to get it level. http://www.truckshop.com/product.php?productid=17957 comparison to stock

10-12-2015, 10:38 AM	#3
69 MOD Senior Member Join Date: May 2013 Location: Lino Lakes, MN Posts: 362	Re: 3/4 Ton 2" Drop Shackles? Exactly what I was looking for! I wasn't sure that the 73+ ones would work, thanks for the link. Nice truck! Thanks, Chad/69 MOD __________________ Chad '71 GMC 2500 Custom Ol Blue '72 Custom Deluxe Highlander Stuffed Olive '73 Trans Am '13 Silverado 2500 Duramax Storm Trooper

10-12-2015, 10:54 AM	#4
70's luvr Registered User Join Date: Nov 2013 Location: Spring Hill,Fl Posts: 223	Re: 3/4 Ton 2" Drop Shackles? Wait! Just realized it was the C10 shackles I used..same as C20. https://djmsuspension.com/product/sh1012c-2/

10-12-2015, 04:13 PM	#5
1971 for fun Registered User Join Date: Jan 2015 Location: Lincoln, CA Posts: 21	Re: 3/4 Ton 2" Drop Shackles? I also used the DJMSH1012C2 shackles fit perfect.

10-12-2015, 04:18 PM	#6
69 MOD Senior Member Join Date: May 2013 Location: Lino Lakes, MN Posts: 362	Re: 3/4 Ton 2" Drop Shackles? Excellent, thank you! Looks like all the GMC's are getting dropped...lol __________________ Chad '71 GMC 2500 Custom Ol Blue '72 Custom Deluxe Highlander Stuffed Olive '73 Trans Am '13 Silverado 2500 Duramax Storm Trooper

10-12-2015, 05:06 PM	#7
72.4me Registered User Join Date: Jun 2015 Location: manteca Posts: 76	Re: 3/4 Ton 2" Drop Shackles? I have a 72 chevy c20 can i use the 44.00 vs 70.00 ones are they different on GMC...what's the difference in the 72 vs 73?

10-12-2015, 05:17 PM	#8
1971 for fun Registered User Join Date: Jan 2015 Location: Lincoln, CA Posts: 21	Re: 3/4 Ton 2" Drop Shackles? The leaf springs are a different width.

10-12-2015, 05:41 PM	#9
69 MOD Senior Member Join Date: May 2013 Location: Lino Lakes, MN Posts: 362	Re: 3/4 Ton 2" Drop Shackles? The first ones listed are for 2.5" wide springs, too big for our trucks. The springs are 2.25" wide which require the second set listed. __________________ Chad '71 GMC 2500 Custom Ol Blue '72 Custom Deluxe Highlander Stuffed Olive '73 Trans Am '13 Silverado 2500 Duramax Storm Trooper

10-12-2015, 08:57 PM	#10
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,728	Re: 3/4 Ton 2" Drop Shackles? I lowered my 70 C2500 with them years ago, work great. Mine were from ECE and as usual, I highly recommend doing business with them. As mentioned above they should be 2 1/4" wide. FWIW, the Longhorn truck I had was equipped with 2 1/2" wide leafs in the rear so use the tape measure. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

10-13-2015, 11:20 AM	#11
72.4me Registered User Join Date: Jun 2015 Location: manteca Posts: 76	Re: 3/4 Ton 2" Drop Shackles? Thanks everyone..nice looking truck 69mod.

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