The search for the perfect joint....

[78 GMC Jimmy]

So I would like to find a combination U-joint. What i have now works, but i would rather have a factory part as opposed to a fabricated /modified U-joint. Partly for reliability and partly to have a spare.

Moog 369
Moog 285

The caps are not that important, since they are often interchangeable. I need one to be inner clip and one outer, but I can swap caps as needed.

Lets say you put a U-joint standing on the table like a cross. I need the top and bottom caps to be the overall height of the 369. And I need the left and right caps to have an overall with of the 285.

(installing a Toyota Drive Shaft onto a Chevy T-case)


Napa said this is what I need. I think the caps are correct, but not the outer cap measurements. I think they are the same, and I need them to be different.

https://www.napaonline.com/en/p/UJSUJ319

 

[rampage]

Come to Humboldt, we have any size shape and flavor of joint you could imagine.

Sorry, I’m of no help …

 

[78 GMC Jimmy]

Anyone know where to find the part?

 

[Wes Harden]

There is a conversion u joint, for 2 different size caps.
An inside clip cap can be use in an outside clip yoke if the cross section is correct

 

[78 GMC Jimmy]

There is a conversion u joint, for 2 different size caps.
An inside clip cap can be use in an outside clip yoke if the cross section is correct

I need the offset to be correct. Two caps close together, and two far apart. Like this:

 

[Wes Harden]

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

 

[78 GMC Jimmy]

Anyone know where to find the part?

Does anyone sell U-joints by specs rather than application?

 

[Big Ray]

What years & models?
What t-case?

 

[78 GMC Jimmy]

What years & models?
What t-case

I installed a 2002 Toyota Tundra rear drive shaft into a 1978 K5 Blazer 4x4. The Blazer rear U-joint is a "combination" and worked well with the drive shaft. The front joint needs to be a combination joint as well and I didn't have one or the part nunber so I fabbed a joint that works very well. I used spacers to compensate for the lack of width on the t-case side, but I would like to change that custom joint out for the proper part. Inner clip/outer clip combo with different overall spacing of the caps on the different clip styles.

Update:

Found it!

Part number: Moog 372

So if anyone needs a replacement rear drive shaft for a lifted K5, grab yourself a $20 Toyota Tundra rear drive from the junk yard, remove the CV joint and grind the tab at the end a little, then use your old rear U-joint and order a Moog 372 for the front and your good to go. The Tundra drive shafts are BEEFY compared to the K5's. Way thicker metal and way heavier. Its a Toyota part, so its bound to be good.

Total cost $39 versus $500 plus to have one made.

 

[Big Ray]

Well, that's good news.

I found three different sizes for a tundra. Good luck

 

[78 GMC Jimmy]

Well, that's good news.

I found three different sizes for a tundra. Good luck

3 different sizes of what? U-joints?

 

[Big Ray]

Yep...
I go to Rock Auto, they have pretty good breakdowns of sizes and fitments and whatnot.

If you have the measurements right go with what you got.

 

[78 GMC Jimmy]

Yep...

Both U-joints are replaced to get the Toyota drive shaft to work on a Chevy, so what ever OEM U-joint are on the drive shaft doesn't matter.

 

[78 GMC Jimmy]

Both U-joints are replaced to get the Toyota drive shaft to work on a Chevy, so what ever OEM U-joint are on the drive shaft doesn't matter.

I used my my Chevy rear U-joint, and the Toyota front U-joint with two caps replaced with a different type and two spacers added. I have the proper front U-joint arriving tomorrow, so I can replace the modified Toyota U-joint in the front with something that is factory built for a Chevy.

So in the end, it will be part of the Toyota drive shaft with all non-Toyota U-joints.

 

[78 GMC Jimmy]

You turn this:

 

[78 GMC Jimmy]

Into this:

 

[78 GMC Jimmy]

You just take that longer section of the Toyota drive shaft, and strip everything off. Lose the CV joint, and the U-joint on the other end. Install the two U-joints that you need, and your good to go. Bolt it up and pin it to win it!

 

[78 GMC Jimmy]

Seeing as how cheap it was, and since I have all the info, part numbers, and procedures - I am going to build another one, just to keep as a spare. The part is impossible to find when you need it, but its easy enough to build one when you don't need it, so I might as well make another one and keep it in the back of the rig with a couple of wrenches taped around it. If I ever bend a drive shaft or have a U-joint go out, I just swap the whole driveshaft in 5 minutes and stow the defective one for later repair or as spare parts for the rest of the drive.

 

[muddybuddy]

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

Wow, i remember when there wasnt any conversion joint for 1350 to 1410, now there is, and 1420 to 1480