1982 GMC Suspension Questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

aero-pilot · 12-11-2008, 09:34 PM

Hello everyone! This might be a very random question but I was wondering if anyone knew what the physical length of the stock rear shackles? I'm asking because I believe that my truck still has the stock shackles with drop hangers on the rear suspension. If this is true then it would explain the stiff suspension in the rear, correct?

I apologize for the quality of the picture.

flamingbig10 · 12-11-2008, 10:03 PM

you have lowering shackles

aero-pilot · 12-15-2008, 10:53 PM

Ok then... Additional question... the lower bolt hole on the shackle would decrease the ride height if I moved the leaf down on the shackle? If I'm thinking my physics through that would be right.

flamingbig10 · 12-15-2008, 11:31 PM

thats right

aero-pilot · 12-18-2008, 03:13 PM

I'm an idiot! That wouldn't be correct... the shackle is connected to the hanger witch is on the frame! If I were to move the leaf down it would raise the rear end. Thank goodness I didn't do anything yet.

flamingbig10 · 12-18-2008, 03:58 PM

I'm a idiot I thought you wanted to raise your truck, and you can remove a couple of leaf springs and it will help the ride

aero-pilot · 12-18-2008, 07:40 PM

Yeah I was thinking of removing the overload spring on the leafs but I still want to be able to pull a trailer if needed. I think I've made my mind up to just go ahead and C-Notch it.

12-11-2008, 09:34 PM	#1
aero-pilot praise the lowered Join Date: Dec 2008 Location: Moore, Oklahoma Posts: 81	1982 GMC Suspension Questions Hello everyone! This might be a very random question but I was wondering if anyone knew what the physical length of the stock rear shackles? I'm asking because I believe that my truck still has the stock shackles with drop hangers on the rear suspension. If this is true then it would explain the stiff suspension in the rear, correct? I apologize for the quality of the picture. Attached Images Last edited by aero-pilot; 12-11-2008 at 09:41 PM. Reason: Trying to add picture

12-11-2008, 10:03 PM	#2
flamingbig10 6.0 powered square Join Date: Feb 2008 Location: Mesquite texas Posts: 3,459	Re: 1982 GMC Suspension Questions you have lowering shackles __________________ Aaron 1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326

12-15-2008, 10:53 PM	#3
aero-pilot praise the lowered Join Date: Dec 2008 Location: Moore, Oklahoma Posts: 81	Re: 1982 GMC Suspension Questions Ok then... Additional question... the lower bolt hole on the shackle would decrease the ride height if I moved the leaf down on the shackle? If I'm thinking my physics through that would be right.

12-15-2008, 11:31 PM	#4
flamingbig10 6.0 powered square Join Date: Feb 2008 Location: Mesquite texas Posts: 3,459	Re: 1982 GMC Suspension Questions thats right __________________ Aaron 1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326

12-18-2008, 03:13 PM	#5
aero-pilot praise the lowered Join Date: Dec 2008 Location: Moore, Oklahoma Posts: 81	Re: 1982 GMC Suspension Questions I'm an idiot! That wouldn't be correct... the shackle is connected to the hanger witch is on the frame! If I were to move the leaf down it would raise the rear end. Thank goodness I didn't do anything yet.

12-18-2008, 03:58 PM	#6
flamingbig10 6.0 powered square Join Date: Feb 2008 Location: Mesquite texas Posts: 3,459	Re: 1982 GMC Suspension Questions I'm a idiot I thought you wanted to raise your truck, and you can remove a couple of leaf springs and it will help the ride __________________ Aaron 1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326

12-18-2008, 07:40 PM	#7
aero-pilot praise the lowered Join Date: Dec 2008 Location: Moore, Oklahoma Posts: 81	Re: 1982 GMC Suspension Questions Yeah I was thinking of removing the overload spring on the leafs but I still want to be able to pull a trailer if needed. I think I've made my mind up to just go ahead and C-Notch it.

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