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05-13-2020, 11:22 AM
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#1 |
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Registered User
Join Date: Feb 2020
Location: Lenoir NC
Posts: 110
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Would this rear end work in my 68?
I've got a 68 stepside and I'm wanting to convert to 5 lug and found this rear end on facebook marketplace. The guys says he thinks its out of a 71-72. Would this work in my truck? And if its a 71-72 it would be the wider rear end correct? Which would give me a little more room inside the fenders for my wheel/tire setup? I can probably get it for $100 but don't want to buy it if it won't work.
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05-13-2020, 11:41 AM
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#2 |
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Registered User
Join Date: Mar 2020
Location: Lakeside, AZ
Posts: 45
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Re: Would this rear end work in my 68?
Should work for you. If the marketplace axles are out of a 4x4 it will be leaf sprung, I'm not sure what your 68 is currently leaf or coil sprung. You would just have to change the perches if you were currently coils.
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05-13-2020, 11:45 AM
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#3 | |
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Registered User
Join Date: Feb 2020
Location: Lenoir NC
Posts: 110
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Re: Would this rear end work in my 68?
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05-13-2020, 11:51 AM
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#4 |
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Registered User
Join Date: Mar 2020
Location: Lakeside, AZ
Posts: 45
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Re: Would this rear end work in my 68?
The drive shaft and yoke ujoint should be 1310 on both your axle and the one pictured.
I think I was incorrect above though. The coil sits on the arm in our trucks and I have not done a conversion so probably best to wait for a better answer on the swap. |
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05-13-2020, 11:54 AM
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#5 | |
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Registered User
Join Date: Feb 2020
Location: Lenoir NC
Posts: 110
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Re: Would this rear end work in my 68?
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05-13-2020, 11:59 AM
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#6 |
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Registered User
Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
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Re: Would this rear end work in my 68?
from the small resolution of the pic I would think it will fit double check your diff for placement of the cross bar mount the trailing arm mounts look like they tapper in for trailing arms
been since 91 when i changed my 68 to 4x4 |
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05-13-2020, 12:05 PM
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#7 |
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Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Would this rear end work in my 68?
If it's a factory 71-72 rear, it's a simple swap. From the photo, it's definitely a coil spring rear. The biggest question is if it's a converted 67-70 rear, or a 71-72. The best way to know is measure it.
Check backing plate to backing plate measurements on your current rearend then ask the seller to check the same, or go look at it in person if it's close enough.
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05-13-2020, 12:09 PM
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#8 | |
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Registered User
Join Date: Feb 2020
Location: Lenoir NC
Posts: 110
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Re: Would this rear end work in my 68?
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05-17-2020, 08:56 PM
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#9 |
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Registered User
Join Date: Feb 2020
Location: Lenoir NC
Posts: 110
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Re: Would this rear end work in my 68?
So I bought the rear end and it looks to be in really good shape. What all should I check out/replace before bolting it up?
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05-18-2020, 12:10 AM
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#10 |
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Post Whore
 
Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,350
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Re: Would this rear end work in my 68?
Drain the oil and pop the cover off and see what you find. Pull the drums off and check for broken parts, or signs of fluid leaks from either the axle or the slave cylinders. Check the drums for wear, warping, and cracks.
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.  RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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05-18-2020, 04:40 PM
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#11 |
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Registered User
Join Date: Feb 2020
Location: Lenoir NC
Posts: 110
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Re: Would this rear end work in my 68?
So I opened it up and it looks really clean, but nothing drained out. It's basically dry inside. I'm assuming someone already drained it. The gears do not appear to damaged at all and I was able to get the axles out without a hitch. Is there a way to tell for sure what the gear ratio is? There are some numbers stamped on the inside but nothing that I recognize as a gear ratio.
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05-18-2020, 05:37 PM
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#12 |
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Registered User
Join Date: Dec 2012
Location: Harrison, AR
Posts: 1,065
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Re: Would this rear end work in my 68?
Divide the big number by the smaller number to get your ratio. I bet your numbers are 41:11.
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Keagan 68 SWB C-10 original 350 A/C 503 Mean Green |
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05-18-2020, 06:03 PM
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#13 |
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Registered User
Join Date: Jul 2019
Location: Beebe, AR
Posts: 2,475
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Re: Would this rear end work in my 68?
While you have the axles out the axle bearings and seals are easy to replace and give you peace of mind.
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1967 C10 1980 Jeep CJ5 2020 Toyota 4Runner 2024 Toyota Tundra |
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05-18-2020, 08:32 PM
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#14 | |
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Registered User
Join Date: Feb 2020
Location: Lenoir NC
Posts: 110
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Re: Would this rear end work in my 68?
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05-19-2020, 05:08 AM
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#15 |
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Senior Member
Join Date: Feb 2010
Location: Falls City, Nebraska "100 Miles From Nowhere"
Posts: 2,219
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Re: Would this rear end work in my 68?
Are those metal shavings in the pic?
__________________
Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property"  "Be American, Buy American" 
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05-19-2020, 08:55 AM
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#16 | |
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Registered User
Join Date: Feb 2020
Location: Lenoir NC
Posts: 110
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Re: Would this rear end work in my 68?
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