I need the SPICER numbers for the correct, HD, coated U-joints for the drive and half shafts. Individual jobber numbers, etc. not needed. It's possible that I can get a very good deal on these through work but I must have the SPICER numbers. Thanks.

 

I can tell you that they once WERE, "5-467X" for the drive shaft and "5-447X" for the halfshafts, but I know those numbers have been superseded at least once. The newer numbers have been posted on here numerous times, but I never made note of them. You can look in the yellow pages in your phone book, under "truck parts" for a Spicer distributor. Hopefully, your source can deal with these old numbers.

RACE ON!!!

 

I work for a Kenworth dealer so we sell Spicer parts. A while back, I called Spicer with those old numbers and they couldn't do anything with them. Unfortunately, the a**hole I talked to didn't seem real interested in being helpful.

 

A**hole is right. Do you have a local (as suggested) distributor? If so, forget the superseding numbers and go straight for the part number. If this get to be a BIG problem, I'm sure I CAN get some help from some old friends to get the numbers.

RACE ON!!!

 

I have just finished an extensive search, on line, for part numbers, and came up with little. Rock Auto shows Precision and AC Delco brands. I figured NAPA would show Dana/Spicer. No go. They may supply Spicer, but the numbers, on line, are their own. The last three digits of their part numbers, "looked" like the last part of the Spicer part number, but they were for non coated joints. Besides, the listing said the main driveline was 2 piece. Knowing all C4 joints are the same, I had looked them up for my '84. When I saw that 2 piece driveline, I figured they might be off a year or two. So I looked them up again for a 1995. Same listing. I hope their counter people have better resources than THAT. The Dana corporate site doesn't have application catalogs, but they DO show superseding numbers. From what I found, the 5-447X is still a current number. The 5-467X went to a 5-626X and then to a 5-786X. When I looked up the dimensions, the 5-447X showed and was the right size. The 5-786X didn't show, but the 5-626X DID and it was the right dimensions, also. There is no indication, on line, these are coated for aluminum shafts, but since they were derived from correct application info, I'm sure they are. Whew!

RACE ON!!!

 

CFI, I appreciate all of the "cyber" leg work. Sounds like your searching was a little more fruitful than mine. I know all of the go-to guys at our local NAPA store and they have tried to find out for me too. They stock Spicer joints for the car, no fittings and they're even called high strength or something to that effect but it's my understanding that the coating is not really something you can see so we just don't know. I've heard some on here refer to them as anondized but I've never heard that term applied to steel before, only aluminum so I'm doubtful that's the correct term. As you more or less indicated, NAPAs numbers are meaningless to Spicer and vice-versa. However, my guys showed two joints for the main driveshaft and four for the half shafts so they, at least don't have the confusion on that issue that you found with NAPA online. The 5-786X (driveshaft?) is one of the numbers I have that the guy at Spicer said meant nothing to him. The other number I have is 5-800X but I will try 5-447X and give them a call again and hopefully get someone different. So the numbers you have are:
5-786X driveshaft
5-447X halfshafts
Have I got that right?
Thanks a bunch!

 

Yes.

And I have to admit, that 5-800X number, "rings a bell". Maybe I saw it here, on the Forum.

RACE ON!!!

 

I can't say what the driveshaft part number is, but I can assure you that the correct Spicer part # for the half-shafts is 5-800X. There are a couple of Spicer u-joints that can be used in the C4 Corvette halfshaft. Of the 2 possible "Brute-Force" heavy duty, no-zerk fitting units, one comes with steel caps and one comes with anodized aluminum caps. The 5-800X is the unit with the aluminum caps made especially for the C4 Corvette aluminum half-shaft. A long distance call directly to a Spicer Tech verified this when I replaced my half-shaft u-joints. I used the 5-800X which fit perfectly.

A lot of shops will use the alternative units with steel caps and put anti-seize on the caps to keep them from welding themselves to the half-shaft. If done properly it works just fine, but it isn't spec.

Also some shops will put in u-joints with zerk fittings for "ease of maintenance". Well, that works too, but it isn't the best choice in my opinion.

 

The part numbers I used were:

Drive Shaft - 5-786X
Half Shaft (at wheel) - 5-800X
Half Shaft (at differential) - SPL302X

I was told that the differential coupling gets a great deal more up and down movement and the SPL302X is a heavy duty version of the 5-800X. Just my $.02

 

These guys will give you instant info with one call, the yare d-shaft experts, carbon fiber what ever, they insatleld my spicers and balanced my drive sahaft.

Patterson Driveshafts 1770 North County Road 80 East
Plainfield, IN 46168
phone: 317-272-0495
fax: 317-272-6212

 

I've BEEN there. Back in the late 70's, my buddy broke a rear spring perch in his Mustang at the NHRA Division 3 Bracket Finals, in Indy. They replaced the broken rear weld yoke in his drive shaft, while we waited and watched. A great bunch of guys.

RACE ON!!!

 

So who sells these Spicer U Joints listed? Either local national auto parts stores or online ordering?

 

Lot's of folks sell them. When we get this 100% sorted out I will have these numbers tattooed on me, if necessary to have them close at hand for anyone else here on the forum when they need them! Obviously, now that I've learned that the correct joints have aluminum caps and so the anondization process makes sense, I will go to NAPA tomorrow and pull their joints out and check them. If they are the ones needed, that will be one quick and easy source for them. I'll also call Spicer again and refuse to be satisfied until I get the definitive answers I'm looking for. I will probably also contact Patterson if needs be.

 

I don't buy the aluminum caps. Anything is possible, but unless this is the result of a recent supercession, I have my doubts on the caps. I replaced mine about 2 years ago (didn't make note of the part numbers) and the caps were steel, with a thin, rubber like coating on them, to prevent the electrolysis that can take place. They were genuine Spicers. Approach with caution.

RACE ON!!!

 

Same here, I did all of my Joints last summer, they were steel caps with a coating, the numbers have changed since then, I still have my receipt but it may not be the right #'s

 

Just bought a set from Tom's Differential in Calif. Genuine Spicer.
Price was very reasonable.

Halfshaft: SPL30-2X Tom's listing UJ-13 (Series 1310)
Driveshaft: 5-786X Tom's listing UJ-27 (Series 1350)

Both are Cold Forged, Anodized for Aluminum Driveshafts, No Zerk Fitting
The folks at Tom's say these are the toughest available,
and are what they use for nitrous, etc. cars.

BTW, Tom's says the Ujoints should be regreased before installation.
Red Line CV-2 Synthetic Extreme Pressure Grease seems to be about the best.

 

And no aluminum caps, right? You got your series mixed up. The driveshaft takes the 1310 series and the halfshaft takes the 1350 series. Your part numbers DO match the correct locations.

RACE ON!!!

 

Just ordered the UJoints from Tom's Differentials. They were in stock and will ship out today. I ordered:

(4) UJ-13 (SPL30-2X) $23.50 each
(2) UJ-27 (5-786X) $14.75 each

These are reported to be extremely strong, non greasable, cold forged for use in Aluminum shafts.

 

Okay, that SPL302X number jibes with one I had gotten from the forum some time back, although it was thought to be a new # for the 5-800X. If the SPL302X is just a stronger version, why not use it for all four half shaft locations, like vsocks shows? And while at NAPA today, I talked to someone different and found out that NAPA brand u-joints are not made by Spicer but that they can get the Spicer. The numbers they had, listed as high performance were 5786X (same apparent number w/o the dash in it) for the driveshaft but the half shaft number was 5617X. Hmmm... Just what we needed, further confusion. I think I'll ignore that one for now.

And I like the sound of that better too. I think I'll get with our parts dept. at work tomorrow and see about checking out some of these numbers and possibly order them.