C4 U-joint markings ?
Thread Starter
Slingshot
Joined: Dec 2001
Posts: 3,817
Likes: 24
From: Charlotte NC
C4 U-joint markings ?
I recently purchased a couple of AC Delco u-joints for my 86 roadster with part #45U0405. This seems to be the correct replacement part for the anti-galvanic drive shaft joints.
The parts are made in the USA but I'm not sure who the manufacturer might be. Can anyone help me interpret these casting numbers to ID the manufacturer?
Thanks much,
P.
The parts are made in the USA but I'm not sure who the manufacturer might be. Can anyone help me interpret these casting numbers to ID the manufacturer?
Thanks much,
P.
Team Owner
Joined: Sep 2003
Posts: 25,375
Likes: 2,734
I recently purchased a couple of AC Delco u-joints for my 86 roadster with part #45U0405. This seems to be the correct replacement part for the anti-galvanic drive shaft joints.
The parts are made in the USA but I'm not sure who the manufacturer might be. Can anyone help me interpret these casting numbers to ID the manufacturer?
Thanks much,
P.
The parts are made in the USA but I'm not sure who the manufacturer might be. Can anyone help me interpret these casting numbers to ID the manufacturer?
Thanks much,
P.
The Neapco premium/performance line has red seals but they would have been done to ACD specs so the cross could have castings only relative to that branding and of course the seals could be any color. The image of the other side of your u-joint I believe is identical to the Neapco premium. Post the snapshot of the other side.
Last edited by WVZR-1; Jan 19, 2013 at 05:54 PM.
Race Director
Joined: Apr 2003
Posts: 17,699
Likes: 1,667
From: moraga ca
If you do some heavy racing, and your avitar shows you do, you might want to get some spicer ujoints with no zerk fitting. They are pretty bulletproof and are not weakened by the drilling of a hole. I wouldn't worry about the coated aspect. My 84 ran spicers it's whole life and nothing corroded.
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
The zerks are useless once installed and the drilled out yoke is not as "solid"/strong as a non-serviceable joint.
IF installed clean with a smear of grease on the caps there won;t be any corrosion from dissimilar metal contact.
Just polish inside the aluminum yoke with a wire brush or 220 sand paper, then you could even apply a coat of anti-seize for the caps to rest in.
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 13
Stories around that the Spicers are hard to get in some places ;
I found the Neapco Brute Force series just as good and better availability at local parts shops
Le Mans Master
Joined: Jun 2009
Posts: 6,528
Likes: 752
From: South Dakota
A lot of companies outsource the raw forgings. I used to work at a forge shop in Iowa. We made u-joint forgings for quite a few manufacturers who did the machining and assembly.
