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Old 02-11-2010, 02:10 PM   #1
wrench_65
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72 rear end in a 65 3/4 ton

i have a 65 3 /4 ton i found a 72 5 lug rear end. does that rear end bolt right up and are the u bolts the same? thanks
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Old 02-11-2010, 02:16 PM   #2
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Re: 72 rear end in a 65 3/4 ton

there both coil spring rear ends...

Last edited by wrench_65; 02-11-2010 at 02:17 PM.
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Old 02-11-2010, 02:16 PM   #3
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Re: 72 rear end in a 65 3/4 ton

i meant coil spring rear ends...

Last edited by wrench_65; 02-11-2010 at 02:17 PM.
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Old 02-11-2010, 05:54 PM   #4
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Re: 72 rear end in a 65 3/4 ton

it fits the trailing arms but the panhard is different. Captainfab knows the details but its as close to a direct boltin as you will get
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Old 02-11-2010, 06:36 PM   #5
wrench_65
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Re: 72 rear end in a 65 3/4 ton

I also have the chance on buying a 65 1/2 ton rear end. dont really mind 6 0r 5 lug just want to get rid of the 8 lug.. will the 6 lug rear end bolt right up as well...
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Old 02-11-2010, 07:27 PM   #6
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Re: 72 rear end in a 65 3/4 ton

If its trailing arm suspension yes.
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Old 02-12-2010, 05:04 PM   #7
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Re: 72 rear end in a 65 3/4 ton

on the 72 rear end when you say the pan hard is different what is that???
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Old 02-13-2010, 12:38 AM   #8
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Re: 72 rear end in a 65 3/4 ton

The panhard is the round bar that goes from the left side of the frame to the rear axle housing , on the 60-65 C10 and 60-72 C20 the axle end mount is a fabricated steel bracket, 66-72 C10 have the mount point forged into the diff pumpkin . so the bar is a bit different
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62 GMC 910 short fleetside 454 super t10 14 bolt
w/gov lock 70s c20 front discs (built in the 80s)
65 GMC 930 dualwheel 292 4spd all origonal 39k mi(my sons truck)
63 GMC 950 camperized school bus, (Gus the bus)
350 4speed 2 speed rear
64 GMC 950 "spare" bus 283? 4speed detroit locker
53 GMC 1ton dual wheel bus
78 GMC c25 short course off road race truck(son's truck)
355 th400 14 bolt (www.wheel2wheel.ca)
88 Peterbilt 379 longhood (hauls race truck)
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Old 02-13-2010, 01:13 AM   #9
19GMC63
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Re: 72 rear end in a 65 3/4 ton

a 72 rear end would be 1.5" wider, no? I thought the width changed in 70. Something to keep in mind.
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Old 02-13-2010, 12:18 PM   #10
wrench_65
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Re: 72 rear end in a 65 3/4 ton

well ended up buying the 72 rear end. thanks for your guys help...
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Old 02-13-2010, 12:22 PM   #11
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Re: 72 rear end in a 65 3/4 ton

Quote:
Originally Posted by 19GMC63 View Post
a 72 rear end would be 1.5" wider, no? I thought the width changed in 70. Something to keep in mind.
wider At the hub ,trailing arm mounts the same , should have common axle shafts to the 73-80ish 12 bolts , can put 4x4 axles in it you want 6 bolt
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62 GMC 910 short fleetside 454 super t10 14 bolt
w/gov lock 70s c20 front discs (built in the 80s)
65 GMC 930 dualwheel 292 4spd all origonal 39k mi(my sons truck)
63 GMC 950 camperized school bus, (Gus the bus)
350 4speed 2 speed rear
64 GMC 950 "spare" bus 283? 4speed detroit locker
53 GMC 1ton dual wheel bus
78 GMC c25 short course off road race truck(son's truck)
355 th400 14 bolt (www.wheel2wheel.ca)
88 Peterbilt 379 longhood (hauls race truck)

Last edited by 62gmc910; 02-13-2010 at 12:23 PM. Reason: ??
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Old 02-14-2010, 12:33 PM   #12
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Re: 72 rear end in a 65 3/4 ton

I put a '71 rear in my '66 (coil spring - trailing arm). My friends say it crabs when it's going down the road. I used the '71 panhard rod. I think I may have to look into an adjustable.
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