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C5 vs C6 CV joints axles

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Old Apr 15, 2015 | 08:34 PM
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Default C5 vs C6 CV joints axles

Does anyone know what makes the C5 axles better than the C6? I did a search and can only find that they are better, but not sure why.

Thanks!
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Old Apr 15, 2015 | 10:17 PM
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Don't know if you've seen this discussion but I saved it because it had the best info I had seen at the time, maybe not enough for you though: (see Spinmonster's and JoesC5 posts)

https://www.corvetteforum.com/forums...les-on-c6.html
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Old Apr 15, 2015 | 10:33 PM
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Saw comparison pictures once but I don't remember where. The design of the actual joint is better on the C5. More area to spread the load.
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Old Apr 15, 2015 | 10:40 PM
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Originally Posted by realcanuk
Saw comparison pictures once but I don't remember where. The design of the actual joint is better on the C5. More area to spread the load.
That's basically what nolimits posted in that discussion I linked, there are more bearings in the C5Z joints to spread the load better.
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Old Apr 16, 2015 | 06:48 AM
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Originally Posted by RicK T
Don't know if you've seen this discussion but I saved it because it had the best info I had seen at the time, maybe not enough for you though: (see Spinmonster's and JoesC5 posts)

https://www.corvetteforum.com/forums...les-on-c6.html
Thank you very much!

I ordered a pair of them yesterday as "spares" in case I break mine at the drag strip. Based on what I read, the differences are not significant, but sometimes a small change can make a big difference.

Last edited by timd38; Apr 16, 2015 at 06:53 AM.
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Old Apr 16, 2015 | 10:15 AM
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Originally Posted by timd38
Thank you very much!

I ordered a pair of them yesterday as "spares" in case I break mine at the drag strip. Based on what I read, the differences are not significant, but sometimes a small change can make a big difference.
you may want to be cautious with that. the quality seems to have dropped off on the GM C5 axles. I swapped my C6Z to brand new C5 half shafts and the first time I hit the gas, I sheared off the splined section. Street tires + 50 mph roll in 2nd + 500 ft lbs of torque =


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Old Apr 16, 2015 | 10:17 AM
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Thanks!

Factory shafts or aftermarket?
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Old Apr 16, 2015 | 10:27 AM
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Brand new OEM purchased through a dealership.
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Old Apr 16, 2015 | 10:38 AM
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Originally Posted by eb_rat_7
Brand new OEM purchased through a dealership.
Oh great........
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Old Apr 16, 2015 | 10:39 AM
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The GM OEM C5 shafts are stronger. Ive broken C6 shafts, never a C5. That is just personal experience and opinion though. Ive had the stock C5 shafts hold north of 1000whp with no problems with years of street and track abuse. Granted im not trying to 60' the car every time I leave a light, but ive broken c6 shafts with less abuse and less power.
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Old Apr 16, 2015 | 11:11 AM
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Originally Posted by timd38
Oh great........
https://www.corvetteforum.com/forums...ont-start.html
I snapped the weak, early 06 half shaft at the track. Ordered up some C5 to fix it, and broke on sat. HOWEVER- I'm guessing its a QC issue as the C5 is stronger and lots of people (like the above) have run crazy power with them. That being said, there have been a few cases in the last couple years of people breaking the C5 on the street on street tires.

Originally Posted by SquatchMachining
The GM OEM C5 shafts are stronger. Ive broken C6 shafts, never a C5. That is just personal experience and opinion though. Ive had the stock C5 shafts hold north of 1000whp with no problems with years of street and track abuse. Granted im not trying to 60' the car every time I leave a light, but ive broken c6 shafts with less abuse and less power.
This seems to be the typical experience with the C5 ones.
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Old Apr 16, 2015 | 11:41 AM
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Thanks all! I hope that I don't need them, but better to have them and not need them than and then have the car down during out 6 days of summer!
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Old Apr 16, 2015 | 04:09 PM
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Originally Posted by timd38
Thanks all! I hope that I don't need them, but better to have them and not need them than and then have the car down during out 6 days of summer!
you might check against the year of your car as the 09 & up use a ZR1 axel which is bigger, also the wheel speed sensors are not the same.
moral of the story if you have a 2009 & up C5 axels won't work
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Old Apr 16, 2015 | 06:40 PM
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Originally Posted by ErnieN85
you might check against the year of your car as the 09 & up use a ZR1 axel which is bigger, also the wheel speed sensors are not the same.
moral of the story if you have a 2009 & up C5 axels won't work
Thanks. I am aware of that issue, since I have an 06, I am ok.
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