1. Feb 2, 2018 #1
   

   serpent710 Veteran Member

   695

   2

   Jul 6, 2007

   Fort Lauderdale, Florida

   Is there a way to tell if I have 28 or 30 splines on my axle without taking it out?

    

   serpent710, Feb 2, 2018

   serpent710, Feb 2, 2018

   #1
2. Feb 2, 2018 #2
   

   Gary S Administrator Lifetime Gold Member

   21,034

   287

   Apr 14, 1999

   Bismarck, North Dakota

   What kind of rear end do you have?

    

   Gary S, Feb 2, 2018

   Gary S, Feb 2, 2018

   #2
3. Feb 2, 2018 #3
   

   BonzoHansen Administrator Lifetime Gold Member

   18,247

   335

   Jun 1, 2005

   Scott from Hamilton, NJ

   A stock 2nd gen 8.5 is always 28.
   
   I think you'd have to remove to id if you suspect changes

    

   BonzoHansen, Feb 2, 2018

   BonzoHansen, Feb 2, 2018

   #3
4. Feb 2, 2018 #4
   

   big gear head Veteran Member

   5,986

   25

   Jul 30, 2001

   Central City, Ky.

   Yes, all of the 2nd gen 10 bolt rear ends had 28 spline axles. They can be upgraded to 30 spline if the differential is also upgraded.

    

   big gear head, Feb 2, 2018

   big gear head, Feb 2, 2018

   #4

   serpent710 likes this.
5. Feb 5, 2018 #5
   

   serpent710 Veteran Member

   695

   2

   Jul 6, 2007

   Fort Lauderdale, Florida

   Sorry for the delay.
   It's a stock 3:42 rear Z28

    

   serpent710, Feb 5, 2018

   serpent710, Feb 5, 2018

   #5
6. Feb 13, 2018 #6
   

   serpent710 Veteran Member

   695

   2

   Jul 6, 2007

   Fort Lauderdale, Florida

   Thank you, It is all stock

    

   serpent710, Feb 13, 2018

   serpent710, Feb 13, 2018

   #6

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