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Old 04-05-2004, 09:56 PM
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65 GMC rear noise

On my '65 GMC 1/2 - ton, there's a big howling from the rearend - a Dana 44.
I open the rear cover & the gears are all pointy & there's metal shavings in there too. So I'm guessing its time for a rebuild but a junkyard guy recently told me that sometimes even if you replace the gears/bearings, the rear might still work out bad because there can be some permanent damage to the casing. Anybody know about this because if this is for real then I need to start thinking about what kind of rear to swap onto the truck. (any suggestions?)

thanks.

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Old 04-08-2004, 05:47 PM
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The only time there's damage to the case, is if the gears lock up or exploded! I had a similar problem on my 73 GM truck. Pinion bearing when bad. I found it was cheaper to get a rear-end out of a junk yard and install it myself then pay $300 plus for a re-build. You might try looking yourself. See if you have a "pick your part" ...I'd find one and pull the brakes and axles out, then I could get the carrier and gears for $50! ...But that's been some time ago (afew yr.s). Good Luck! ...Mark
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Old 04-09-2004, 12:39 PM
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Had the same thing happen to my 67 C20. 30+ years of driving it was worn bad. It was the 4.57:1 rearend so I got a whole new rearend from at the yard from a 72 C20 and had it rebuilt with 3.73.

Good Luck.
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Old 04-12-2004, 05:51 AM
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gears and bearings are most likely worn from 30 years of service. replace and it will last another 30. if you get somthing from th eyard it might be as worn as what you have now.. you can start by replacing the wheel bearings and see if that helps, if not i would re do it completely...
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Old 04-17-2004, 09:38 AM
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thanks guys. I need help sorting this one out. I suppose a good place to go from here would be to talk to the rear - end mechanic I was referred to, he's got a good reputation. I'd rather keep the rear-end as is anyway. but mabye thats also because i'm a bit intimidated by the details of swapping rear-ends... hey I see a new post in that...
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