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Differential drive shaft sizes?

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Old May 16, 2002 | 08:16 PM
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Default Differential drive shaft sizes?

I am trying to put in my new rear end but the front connection to the drive shaft is smaller than my old one. Can I just switch the input yoke or should I get a different U Joint, or is there something else I should do?

Thanksh
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Old May 16, 2002 | 10:55 PM
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Default Re: Differential drive shaft sizes? (Maurice)

A new U-joint will do the trick. i have the same (similar) situation on my car. It appears that the driveshaft and/or diff were replaced and simply put they don't match. Either the driveshaft is bigger than the yoke or vice versa. The local parts store had to dig out a combo u-joint that was both sizes. Shouldn't be a big deal.

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Old May 17, 2002 | 12:58 AM
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Default Re: Differential drive shaft sizes? (Maurice)

samething thing here. did my rearend and ended up with 2 ujaoint that did not fit.....turned out the the yoke at the ranny is larger than that of the diff!!

Rod :cool:
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Old May 17, 2002 | 06:26 AM
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Default Re: Differential drive shaft sizes? (ddecart)

Thanks guys. Did the new ujoint thing and the parts store had it in stock, I was pretty amazed. I also had to change out the braces that held the driveshaft in place, I had to go to the loop type, another trip to several parts stores on that one. Just got the car running and took it for a drive, it sure goes through the gears quick, and gets out of 1st really quick.
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Old May 28, 2013 | 08:18 AM
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Default

I know this is an old post but I just ran into this problem myself.

Just installed a 67 BB 4.10 into a 71 car and hoping someone has the part number for the conversion U-Joint I need

The 67 rear end takes a smaller U joint size.

MUCH APPRECIATED!

-Jason
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