U Joints

[djbr459]

Hi all,
I changed out my rear end on my 66 Coronet.
The yoke takes a larger u joint than what is on the drive shaft.
Do they make a u joint with two different sizes or do I have to change the yoke?
Thanks

 

[Jeff Peterson]

Just have to figure out what combo you have

Drivetrain :: Components

 

[Doorkicker]

Assuming you have the 8.75... I suspect you'll need the 7260 to 7290 conversion (7260 to 7290 Conversion U-Joint), which is what I needed sometime back, but have since changed everything.

But, do your homework... you might need the 1350 to 7260 (1350 to 7260 Conversion U-Joint) or the 1350 to 7290 (1350 to 7290 Conversion U-Joint).

The 1350 is "heavy duty" and the largest of the average bunch. The next by size is the 7290 with 2.562" yoke span and 1.125" bearing caps. And the "smallest" is the 7260 with 2.125" yoke span and 1.078" bearing caps. If you have/had a 318 with an 8.75, you very well likely have a 7260 if it's still stock.

BTW... the master of all things rear diff's is Cass Eslick from Dr. Diff. If you need help and need to pick something up, I highly recommend to look no further. A huge help to me.

HTH.

 

[gkent]

They make u-joints for every youke combination you can imagine - and relatively inexpensive. these guys stock everything and ship anywhere.

Dennys Driveshaft and Driveline Parts home of High Speed High RPM Balanced Steel and Aluminum Drive Shaft Specialist with Free Shipping on parts orders over $99.00

Denny's Driveshaft and Driveline Parts Specialist custom built high performance steel and aluminum driveshafts for street rod race car van pickup 4x4 truck. Denny's Driveshafts are high speed high rpm balanced and tested for optimum racing and high performance abilities. Dana Spicer authorized...

www.dennysdriveshaft.com

Combination / conversion universal joint size, dimensions, specifications and part numbers

Denny's Driveshafts stock a wide variety of combination / conversion universal joints in various sizes for car and light truck applications. Choose from the industries best brands Dana Spicer, Neapco and AAM

www.dennysdriveshaft.com

 

[BSB67]

But, do your homework... you might need the 1350 to 7260 (1350 to 7260 Conversion U-Joint) or the 1350 to 7290 (1350 to 7290 Conversion U-Joint).

The 1350 is "heavy duty" and the largest of the average bunch. The next by size is the 7290 with 2.562" yoke span and 1.125" bearing caps. And the "smallest" is the 7260 with 2.125" yoke span and 1.078" bearing caps. If you have/had a 318 with an 8.75, you very well likely have a 7260 if it's still stock.

BTW... the master of all things rear diff's is Cass Eslick from Dr. Diff. If you need help and need to pick something up, I highly recommend to look no further. A huge help to me.

HTH.

Or 1330 to either 7260 or 7290.

 

[djbr459]

Thanks for all of the great advice.

 

[beanhead]

Denny's Driveshaft site has all the measurements and info to help you get it fingered out.