Replacing the U joints on a factory 69 440 M code Barracuda. The U-joint at the rear axle end of the drive shaft is an odd one, I have not been able to find one after a long search.

The X dimensions from end of cap to end of cap are 3 5/8 X 3 1/8. The 3 5/8 dimension has caps with a diameter of 1 1/8 and the 3 1/8 dimension has caps with a diameter of 1 1/16.

Anyone know of a source that may carry one of these?
Thanks,
Wolfe

Sounds like a combo u-joint, available anywhere.

-Daty

http://www.moparts.org/Tech/Archive/shaft/4.html

from the tech archives

Lar, the 13.. joints you asked about are Spicer brand or "styles" of Ujoints, their specs are:
1310, End of Cap to End of Cap 3.219", cap dia 1.063"
1330, End of Cap to End of Cap 3.625", cap dia 1.063"
1350, End of Cap to End of Cap 3.625", cap dia 1.188"

The Mopar/Detroit joint specs are:
7260, Clip to Clip 2.125" or 3.125" EoC to EoC, Cap dia 1.078"
7290, Clip to clip 2.625" or 3.625 EoC to EoC, Cap dia 1.125"
Here is a pic of the 1330-1350 Conversion joint I am currently using for my Dshaft to rear end connection. There is a big difference between the size and strength between the caps of this joint.
Hope this helps.
Troy

IIRC the NAPA # is a 527..

Finally found information I was looking for here: https://board.moparts.org/ubbthreads/showflat.php?Number=7177974&page=0

Then I found it here: http://www.finditparts.com/t/317/manufacturer/neapco/products/411150/neapco-2-0527

Thanks
Wolfe..