U Joints

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Aug 1, 2019 | 08:59 PM

Paul_R

Thread Starter

2nd Gear

Joined: Aug 2019

Posts: 2

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U Joints

Have an 81 automatic. Last year I had the half shaft u joint replaced on one side and it took 9 different u joints to find one that my mechanic was able to tack weld after tying up his hoist for three days. Need any information on which u joint to use to replace the two on the driveshaft? Any manufacturers info such as a part number etc.... would be of great help. I have two of them delivered by Corvette America last year made by Coast to Coast. Their part number is 30970 or 1KE420FB. Thanks

Aug 1, 2019 | 09:43 PM

JoeMinnesota

Pro

Joined: May 2016

Posts: 708

Likes: 150

From: Minnesota

I answered the question in tech forum. Go to Denny's Driveshafts and order Spicer SOLID (NON greaseable) u-joints. You will need to know or determine a bit of info on your half shafts.

https://www.dennysdriveshaft.com/c29_corvette.html

Aug 3, 2019 | 12:09 PM

MelWff

Race Director

Joined: May 2006

Posts: 18,736

Likes: 2,582

why would you tack weld a u-joint, maybe you need a new mechanic?

Aug 3, 2019 | 12:15 PM

sullyman56

Drifting

Joined: Nov 2013

Posts: 1,547

Likes: 282

From: Scottsdale Arizona

Tack weld?

Aug 3, 2019 | 10:57 PM

Peterbuilt

Le Mans Master

Joined: Aug 2006

Posts: 7,426

Likes: 1,559

From: mount holly NC

2025 c3 ('74-'82) of the Year Finalist - Unmodified

2019 C3 of Year Finalist (appearance mods)

Does this help?

Spicer numbers:

Aug 4, 2019 | 06:18 AM

99 Black Bird TA

Racer

Joined: Dec 2003

Posts: 487

Likes: 160

From: Two Lane Black Top

Not sure what's going on with that mechanic.

Replaced all six u-joints on my 72 with no issue and no tack welding. Took one call and one trip to a quality local auto parts store.