1961 Driveshaft to 1986 Rear End U Joint? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

coolfool_2 · 02-28-2017, 11:19 PM

So i threw a 1986 rear end under my truck in the change over to 5 lug. Didnt realize the U Joints would be different sizes. Has anyone else ran into this issue and is there a wide to narrow U joint available to fix this issue? Any help appreciated. It seems the cups are both the same size but the newer rear end is wider(4 inches) compared to the 1961 driveshaft(3.5 inches)
Thanks,
Josh

**PGSigns** · 03-01-2017, 07:45 AM

They make what we called off cross U-joinnts. Sounds like you need one to go from 1310 to 1330. This page has good information on both u joints and the sizes so you can verify what you need.
Jimmy
http://www.therangerstation.com/Maga...08/ujoints.htm

coolfool_2 · 03-01-2017, 08:51 AM

Thank you, I did not stumble across this page in my research last night.
Josh

53lowdown · 03-01-2017, 12:03 PM

I found Denny's Driveshaft has good information on ujoints to adapt driveshaft to pinion yoke.
http://www.dennysdriveshaft.com/c130...oints_all.html

They were out of stock for what I needed, but got the part number, and ordered from Drivetrain America
https://www.drivetrainamerica.com/

02-28-2017, 11:19 PM	#1
coolfool_2 Registered User Join Date: Aug 2016 Location: Kitts Hill Ohio Posts: 32	1961 Driveshaft to 1986 Rear End U Joint? So i threw a 1986 rear end under my truck in the change over to 5 lug. Didnt realize the U Joints would be different sizes. Has anyone else ran into this issue and is there a wide to narrow U joint available to fix this issue? Any help appreciated. It seems the cups are both the same size but the newer rear end is wider(4 inches) compared to the 1961 driveshaft(3.5 inches) Thanks, Josh

03-01-2017, 07:45 AM	#2
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: 1961 Driveshaft to 1986 Rear End U Joint? They make what we called off cross U-joinnts. Sounds like you need one to go from 1310 to 1330. This page has good information on both u joints and the sizes so you can verify what you need. Jimmy http://www.therangerstation.com/Maga...08/ujoints.htm __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic

03-01-2017, 08:51 AM	#3
coolfool_2 Registered User Join Date: Aug 2016 Location: Kitts Hill Ohio Posts: 32	Re: 1961 Driveshaft to 1986 Rear End U Joint? Thank you, I did not stumble across this page in my research last night. Josh

03-01-2017, 12:03 PM	#4
53lowdown Junior Member Join Date: Feb 2005 Location: topeka, kansas Posts: 258	Re: 1961 Driveshaft to 1986 Rear End U Joint? I found Denny's Driveshaft has good information on ujoints to adapt driveshaft to pinion yoke. http://www.dennysdriveshaft.com/c130...oints_all.html They were out of stock for what I needed, but got the part number, and ordered from Drivetrain America https://www.drivetrainamerica.com/ __________________ _______________________________________ 62 SWB BBW (under construction) 86 Vette Convertible

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