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What u-joint do I need?

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Old Feb 23, 2008 | 07:49 PM
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maddmickey's Avatar
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From: Enterprise Ut
Default What u-joint do I need?

I am installing a 1966-67 muncie m21 in a 74 vette that came with a th400. I have a slip yoke for the muncie, but it is smaller than the driveshaft u-joint. I read a post saying to get a u-joint for a 76 and or later, because it used a different joint for the th350. After a half hour at the parts store we couldnt find one that was offset. Does anyone know what I am looking for?
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Old Feb 23, 2008 | 08:27 PM
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From: Taylor Michigan
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There are combination joints available at better parts stores. Best bet is to phone some stores in your area and ask for a combination joint to fit your chassis. They may want the drive shaft and yoke to help you get the correct joint. There are several of them for many different combinations, I have sold dozens of them.

PS, these will not be found in a computer. AEC manufacturing company makes them. AEC makes them for various brands to resell

Last edited by Ironcross; Feb 23, 2008 at 08:29 PM.
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Old Feb 23, 2008 | 09:19 PM
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Default Here's the U-joint I used...

From an old post I put up. I went from a Turbo 400 output yoke to a M-21 driveshaft.


http://forums.corvetteforum.com/show...hlight=u-joint

Richmond 6-speed to my former Muncie M-21 driveshaft:

Spicer 5-134x
or
TRW 20056(Part number on receipt is PRJ-20056

The yoke I used was a 3930827, supposedly a Turbo 400 yoke.

Those part numbers are from 1998 so be aware.

Thanks to Ecklers for providing me with the U-joint part number....they didn't have to, and I mentioned that I'd be willing to buy it from them, but that if it didn't fit; it would just end up being shipped back and forth across the country. They were very nice about it.
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Old Feb 23, 2008 | 09:38 PM
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From: Taylor Michigan
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Originally Posted by carriljc
From an old post I put up. I went from a Turbo 400 output yoke to a M-21 driveshaft.


http://forums.corvetteforum.com/show...hlight=u-joint

Richmond 6-speed to my former Muncie M-21 driveshaft:

Spicer 5-134x
or
TRW 20056(Part number on receipt is PRJ-20056

The yoke I used was a 3930827, supposedly a Turbo 400 yoke.

Those part numbers are from 1998 so be aware.

Thanks to Ecklers for providing me with the U-joint part number....they didn't have to, and I mentioned that I'd be willing to buy it from them, but that if it didn't fit; it would just end up being shipped back and forth across the country. They were very nice about it.
The part number sounds correct.
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