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06-05-2019, 05:28 PM
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#1 |
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Registered User
Join Date: Sep 2016
Location: Albemarle
Posts: 21
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Rear end question
I have a '64 GMC series 1000. My rear gear ate its self last week. My friend gave me a 5 lug rear end from '71-'72. What all needs to be done to get the newer rear end installed on my '64? I have a very limited budget. Thanks in advance for the help.
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06-05-2019, 05:34 PM
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#2 |
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Registered User
Join Date: Aug 2016
Location: Lake Forest, CA
Posts: 2,177
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Re: Rear end question
Are they both for a leaf or coil spring truck?
Should be a bolt in and go. You will have to get a pan hard bar that works. The 72 one may work, the 64 one is longer. Post picture under the rear of your truck and of the replacement rear end. Instead of speculating on what you have, we can give definitive answers.
__________________
"Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC |
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06-05-2019, 05:56 PM
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#3 |
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Registered User
Join Date: Sep 2016
Location: Albemarle
Posts: 21
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Re: Rear end question
I dont know how to post pics but both rear ends are leaf spring. The newer rear end is 64" from outside of brake drum to outside of brake drum. My old rear end is 60.5" from outside of brake drum to outside of brake drum.
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06-05-2019, 06:22 PM
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#4 |
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Registered User
Join Date: Sep 2016
Location: Albemarle
Posts: 21
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Re: Rear end question
It looks like I have Dana 44 rear end under my truck now.
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06-05-2019, 06:29 PM
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#5 |
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1965 Chevy C10, 2005 4.8L/4l60
 
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,546
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Re: Rear end question
That’s what GMC’s has mostly.
The 71/72 will be 1.5” wider that your Dana I believe. If the leaf mounts line up, then go for it.
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Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684  support our troops! |
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06-05-2019, 07:35 PM
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#6 |
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Registered User
Join Date: Sep 2016
Location: Albemarle
Posts: 21
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Re: Rear end question
I measured from leaf spring bracket to leaf spring bracket and the difference is 3/4". Will I be able to use the new rear end?
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06-05-2019, 11:12 PM
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#7 | |
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60-66 Nut
 Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,252
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Re: Rear end question
Sometimes there is enough movement in the spring eye bushings to be able to bolt up a differential with wider spring perch spacing. If not the spring perched will need to be cut off and welded back on at the correct spacing. Are the shock mounts the same between the two?
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06-05-2019, 11:18 PM
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#8 |
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Registered User
Join Date: Sep 2016
Location: Albemarle
Posts: 21
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Re: Rear end question
Captainfab, not sure. I didn't measure that one. I will do that tomo.
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06-06-2019, 11:42 AM
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#9 |
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Senior Member
Join Date: Jan 2011
Location: Hayes Va
Posts: 4,569
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Re: Rear end question
So where are you? I have some stuff that may help you out.
Jimmy
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60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic |
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06-06-2019, 01:05 PM
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#10 | |
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Registered User
Join Date: Sep 2016
Location: Albemarle
Posts: 21
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Re: Rear end question
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06-06-2019, 03:38 PM
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#11 | |
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Registered User
Join Date: Aug 2016
Location: Lake Forest, CA
Posts: 2,177
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Re: Rear end question
Quote:
__________________
"Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC |
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06-07-2019, 06:43 AM
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#12 |
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Senior Member
Join Date: Jan 2011
Location: Hayes Va
Posts: 4,569
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Re: Rear end question
With Alberarle listed as your location thought you may be near the sound and bit more east. I have a 65 GMC frame with the Dana in it and if you want to make the trip you can have it. That will give you a bolt in fix and don't have to worry about shocks or pinion angle.
Jimmy
__________________
60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic |
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06-07-2019, 02:05 PM
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#13 | |
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Registered User
Join Date: Sep 2016
Location: Albemarle
Posts: 21
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Re: Rear end question
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