1971 GMC 2 wd conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dme922 · 03-09-2012, 02:45 AM

I am new to this forum and hope you guys can help me on my build. I have a 83 donor for my 4 wd parts but what im wandering about is the leaf hangers and any advice i can get on this build. My truck is equipped with rear leafs already. Any help or suggestion will be greatly appreciated.
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Mike C · 03-09-2012, 07:56 PM

Not sure how the best way to combine all the parts would be. On 67-72, the 4x4 hangers are different than the 2x4. They lower the spring which is why 4x4 sits higher than the 2x. 4x4's also have 2 1/2" wide springs while the 2x4 has 2 1/4". Except Longhorns that had 2 1/2" wide leafs as well. I haven't looked at the parts Longhorn that I have in awhile to remember if the hangers are same as 4x4 or not, but I think they are. Longhorn also had 40" spring centers like the 4x4's.

dme922 · 03-09-2012, 08:16 PM

Do you have any of the 4x4 leaf hangers
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dme922 · 03-09-2012, 08:18 PM

Quote:

Originally Posted by dme922

I am new to this forum and hope you guys can help me on my build. I have a 83 donor for my 4 wd parts but what im wandering about is the leaf hangers and any advice i can get on this build. My truck is equipped with rear leafs already. Any help or suggestion will be greatly appreciated.
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Would you happen to have any 4x4 hangers?
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**dennislbrooks** · 03-09-2012, 11:07 PM

Lifts blocks and longer ubolts is one way to lift the orig 2wd rear and keep the same spring rate. You may need longer shocks and a longer brake flex hose depending on the lift. You can probably get away with 2.5" and not change shocks and brake hose.

As far as the front I used 72 springs and actually removed one leaf to get the height I wanted.

I can send any pic you want on the front as I converted my 67 c10 to a k10 using 69 hangers.

oldschool18 · 03-10-2012, 12:23 AM

are the leafs the same length on the 67-72 to the 73-87's

03-09-2012, 02:45 AM	#1
dme922 Registered User Join Date: Mar 2012 Location: Gallipolis, Ohio Posts: 296	1971 GMC 2 wd conversion I am new to this forum and hope you guys can help me on my build. I have a 83 donor for my 4 wd parts but what im wandering about is the leaf hangers and any advice i can get on this build. My truck is equipped with rear leafs already. Any help or suggestion will be greatly appreciated. Posted via Mobile Device

03-09-2012, 07:56 PM	#2
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,715	Re: 1971 GMC 2 wd conversion Not sure how the best way to combine all the parts would be. On 67-72, the 4x4 hangers are different than the 2x4. They lower the spring which is why 4x4 sits higher than the 2x. 4x4's also have 2 1/2" wide springs while the 2x4 has 2 1/4". Except Longhorns that had 2 1/2" wide leafs as well. I haven't looked at the parts Longhorn that I have in awhile to remember if the hangers are same as 4x4 or not, but I think they are. Longhorn also had 40" spring centers like the 4x4's. __________________ 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

03-09-2012, 08:16 PM	#3
dme922 Registered User Join Date: Mar 2012 Location: Gallipolis, Ohio Posts: 296	Re: 1971 GMC 2 wd conversion Do you have any of the 4x4 leaf hangers Posted via Mobile Device

03-09-2012, 11:07 PM	#5
dennislbrooks Senior Member Join Date: Feb 2004 Location: Williamsburg, Ohio Posts: 1,766	Re: 1971 GMC 2 wd conversion Lifts blocks and longer ubolts is one way to lift the orig 2wd rear and keep the same spring rate. You may need longer shocks and a longer brake flex hose depending on the lift. You can probably get away with 2.5" and not change shocks and brake hose. As far as the front I used 72 springs and actually removed one leaf to get the height I wanted. I can send any pic you want on the front as I converted my 67 c10 to a k10 using 69 hangers.

03-10-2012, 12:23 AM	#6
oldschool18 Registered User Join Date: Jan 2010 Location: Hollidaysburg, PA Posts: 785	Re: 1971 GMC 2 wd conversion are the leafs the same length on the 67-72 to the 73-87's __________________ _________________________________ 62 Impala 70 C-10 LWB 71 K-10 SWB 85 C-10 LWB==SOLD 01 2500 HD Members Met......2003Silverado (Dave)



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