1990 C4 U joints
Slingshot
Joined: Dec 2001
Posts: 3,817
Likes: 24
From: Charlotte NC
ACDelco Half-shaft:
Half-shaft - Spicer 5-799X (current replacement), aka GM #89059111 http://www.neapco.com/pdf/Performanc...ed-9901155.pdf
ACDELCO Part # 45U0400 {#89049301}JOINT,RR WHL DRV SHF INR/OTR UNIVERSAL -; LEFT/RIGHT HAND; OPTIONAL ANTI-GALVANIC U-JOINT FOR USE IN ALUMINUM YOKES; PREMIUM;
Half-shaft - Spicer 5-799X (current replacement), aka GM #89059111 http://www.neapco.com/pdf/Performanc...ed-9901155.pdf
ACDELCO Part # 45U0400 {#89049301}JOINT,RR WHL DRV SHF INR/OTR UNIVERSAL -; LEFT/RIGHT HAND; OPTIONAL ANTI-GALVANIC U-JOINT FOR USE IN ALUMINUM YOKES; PREMIUM;
Safety Car
Joined: Jan 2004
Posts: 3,759
Likes: 8
ACDelco Half-shaft:
Half-shaft - Spicer 5-799X (current replacement), aka GM #89059111 http://www.neapco.com/pdf/Performanc...ed-9901155.pdf
ACDELCO Part # 45U0400 {#89049301}JOINT,RR WHL DRV SHF INR/OTR UNIVERSAL -; LEFT/RIGHT HAND; OPTIONAL ANTI-GALVANIC U-JOINT FOR USE IN ALUMINUM YOKES; PREMIUM;
Half-shaft - Spicer 5-799X (current replacement), aka GM #89059111 http://www.neapco.com/pdf/Performanc...ed-9901155.pdf
ACDELCO Part # 45U0400 {#89049301}JOINT,RR WHL DRV SHF INR/OTR UNIVERSAL -; LEFT/RIGHT HAND; OPTIONAL ANTI-GALVANIC U-JOINT FOR USE IN ALUMINUM YOKES; PREMIUM;
And from what I remember, I wonder if those AC Delco are Spicer. As I've seen those mentioned as an alternative to Spicer.
From what has been posted, Spicer has discontinued the ujoints for the Corvette.
Here are the numbers you want to look for if you can find some NOS Spicer coated ujoints:
5-786X for aluminum driveshaft (1310 series)
5-800X for aluminum half shafts (1350 series)
I went with Neapco "Brute Force" ujoints from Advance:
1-0626BF for aluminum driveshaft (1310 series)
2-0617BF for aluminum half shafts (1350 series)
Team Owner
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
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Burning Brakes
Joined: May 2010
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From: High Point NC
I just ordered the driveshaft units from Rockauto
PRECISION Part # 369C {U Joint - Premium}
Optional Anti-Galvanic U-Joint for use in Aluminum Yokes; Position: I1- At Transmission; I2- At Rear Axle
PRECISION Part # 369C {U Joint - Premium}
Optional Anti-Galvanic U-Joint for use in Aluminum Yokes; Position: I1- At Transmission; I2- At Rear Axle
Slingshot
Joined: Dec 2001
Posts: 3,817
Likes: 24
From: Charlotte NC
Nope, you don't want the 5-799X. They don't have the anti-galvanic coated caps. You want ujoints intended for aluminum shafts, not steel.
And from what I remember, I wonder if those AC Delco are Spicer. As I've seen those mentioned as an alternative to Spicer.
From what has been posted, Spicer has discontinued the ujoints for the Corvette.
Here are the numbers you want to look for if you can find some NOS Spicer coated ujoints:
5-786X for aluminum driveshaft (1310 series)
5-800X for aluminum half shafts (1350 series)
I went with Neapco "Brute Force" ujoints from Advance:
1-0626BF for aluminum driveshaft (1310 series)
2-0617BF for aluminum half shafts (1350 series)
And from what I remember, I wonder if those AC Delco are Spicer. As I've seen those mentioned as an alternative to Spicer.
From what has been posted, Spicer has discontinued the ujoints for the Corvette.
Here are the numbers you want to look for if you can find some NOS Spicer coated ujoints:
5-786X for aluminum driveshaft (1310 series)
5-800X for aluminum half shafts (1350 series)
I went with Neapco "Brute Force" ujoints from Advance:
1-0626BF for aluminum driveshaft (1310 series)
2-0617BF for aluminum half shafts (1350 series)
Safety Car
Joined: Jan 2004
Posts: 3,759
Likes: 8
Though, some don't like the seal that Spicer started using as it can crack. I'd just look at the Neapco Brute Force. As you can get those at Advance and are supposed to be a good joint as it is my understanding that Neapco has been around longer than Spicer.
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Slingshot
Joined: Dec 2001
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From: Charlotte NC
FWIW
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But you have to decide if you're willing to risk the cap corroding to the shaft if you go with the noncoated Spicer 5-799X joint. Sure would suck if the next time you replace the joints and you can't press the caps out or it ends up damaging the shaft trying to press corroded caps out. I'd say GM went with coated caps for a reason as they cost more than non coated caps. It might not hurt to call Spicer to find out why they discontinued the 5-800X joint since the C4 is supposed to have a coated cap.
Neapco Brute Force ujoints have the coated caps for aluminum shafts. That's what I'm going with. Plus you don't have to worry about the seal cracking like you do with the Spicer joints.
Team Owner
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From: Freedom is never more than one generation away from extinction.
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Who puts directional arrows on their ujoints?
My Neapco Brute Force ujoints don't have arrows. I called Neapco, and they said there is no right or wrong way to put the ujoint in as it didn't matter which way you pressed them in.
I also called Spicer. They said their joints don't have arrows on them and said it didn't matter which way you pressed in a non greasable joint. But did say some race guys like to put the greasable joints in a certain way.
My Neapco Brute Force ujoints don't have arrows. I called Neapco, and they said there is no right or wrong way to put the ujoint in as it didn't matter which way you pressed them in.
I also called Spicer. They said their joints don't have arrows on them and said it didn't matter which way you pressed in a non greasable joint. But did say some race guys like to put the greasable joints in a certain way.
Last edited by samsonb; Jun 2, 2010 at 02:53 PM.
Le Mans Master
Joined: Jul 2007
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From: Tampa Florida
Melting Slicks
Joined: Apr 2003
Posts: 3,110
Likes: 6
From: Red Sox Nation! RI
If you need u-joint part #s and info, here are a couple threads that Rainman is parroting from.
http://forums.corvetteforum.com/c4-g...d-to-know.html
http://forums.corvetteforum.com/c4-t...-u-joints.html
http://forums.corvetteforum.com/c4-g...d-to-know.html
http://forums.corvetteforum.com/c4-t...-u-joints.html
Burning Brakes
Joined: Nov 2004
Posts: 897
Likes: 12
From: Land of Whiskey Rebels, PA
OK, here is what I learned from my experience with the U-joints on my driveshafts.
Our U-joints come without Zerk (grease) fittings. Don't replace them with ones with Zerk fittings. I did and found that a grease-gun fitting WILL NOT fit on the Zerk fitting after the drive shaft has been installed in the car. Naturally, I had to do it all over again.
Lesson learned---the hard way.
Mike
'90 'vert
Our U-joints come without Zerk (grease) fittings. Don't replace them with ones with Zerk fittings. I did and found that a grease-gun fitting WILL NOT fit on the Zerk fitting after the drive shaft has been installed in the car. Naturally, I had to do it all over again.
Lesson learned---the hard way.
Mike
'90 'vert
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Doing the ujoints in the halfshaft wasn't really bad. Make sure you tap them on both sides with a hammer/chisel in the opposite direction you pressed it to loosen it up.
Last edited by samsonb; Jun 6, 2010 at 10:30 PM.
Drifting
Joined: Oct 2006
Posts: 1,554
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From: Romeoville IL
