Quick question about driveshafts?

[forcefed]

Sorry this has been likely answered before but helping a friend out and we swapped out his rear axle out and installed a older rear axle. Well his truck is a 1993 and the axle is out a 1991. The yokes take different u-joints. Wanting to use his driveshaft but his u-joint caps are larger than the yoke on the old axle. Is there a part number that has two different cap sizes for this dilema? Maybe at like autozone or napa? Thanks for any info on this. I'm assuming this is the years close to being different yoke lenghts changed

 

[rjglenn]

Combination Joint

I just replaced a u-joint today in my 92 F350. I had to get a combination (*******) joint from NAPA, #P458.

If you have a micrometer measure the diameter of the cups and the length of the cross with the cups in place. Your NAPA jobber should be able to look these up in the book and find the proper combination joint.

You could also buy one each of the joints and have an automatic spare.

In my case the cups were 1.125" & 1.063" and I do not recall the cross length.

 

[rjglenn]

Why does this thing bleep out a common (non-curse word) for a type of u-joint?

 

[forcefed]

Thanks I just wanted to know before I went in town tomorrow that they actually made them like that.

 

[rjglenn]

Only reason I know is because I had to make two trips today...

The one listed in the computer was wrong, but its basically a parts built truck anyhow.

 

[bike-maker]

When I changed the rear end out of my truck, the original auto drive shaft used smaller U-joints than the manual rear end came equipped with. On manually equipped trucks, the U-joints and drive shafts are beefier.
The guy down at O'reilly's had a really handy conversion chart in the back of one of his catalogs that could combine 2 different U-joints and give a part # for the cross-breed. Came in real handy.

 

[forcefed]

Thanks alot. I'm getting ready to head to town and piece this together. I'm just just glad its not a special order item. Thanks again.

 

[Agnem]

I wouldn't call it a ******* U-joint. The Spicer 3550 and 3540 (IIRC) are common items. A lot of Fords used them.