Jump to content

Which Axle 9.75 or 9.5

Antoine08

By Antoine08
in Engines & Drivetrain

 Share

Recommended Posts

DCOX Enthusiast

DCOX

Posted
Posted

Yup. My 2014 6.2 with 3.42 is stamped with a 9.76. I'll take a picture in a few

  • Replies 42
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Antoine08
Antoine08

Hey guys i answered my own question. To all you 6.2L owners it is said by GMDirect that we have the larger 9.75" Axle. so if you have the 3.42 gears, the GM 3.73 can be a direct replacement. Part numb

Posted Images

Jon A Senior Enthusiast

Jon A

Posted
Posted

Nice find! I hadn't noticed that--it's kind of hard to see even with a lift, I found taking a pic with my phone easiest. I confirmed my 2014 6.2 3.42 also has 9.76" written on it.

 

Of course this brings up a couple more questions. If the only difference between the 9.76" and 9.50" really is just the ring and pinion, why did they feel the need to cast 9.76" into the housing? Can anybody with a 5.3 non-NHT confirm they have 9.50" cast into their housing? I know it would make no sense for it not to, but that's never stopped GM before....

bowtie482 Enthusiast

bowtie482

Posted
Posted

Nice find! I hadn't noticed that--it's kind of hard to see even with a lift, I found taking a pic with my phone easiest. I confirmed my 2014 6.2 3.42 also has 9.76" written on it.

 

Of course this brings up a couple more questions. If the only difference between the 9.76" and 9.50" really is just the ring and pinion, why did they feel the need to cast 9.76" into the housing? Can anybody with a 5.3 non-NHT confirm they have 9.50" cast into their housing? I know it would make no sense for it not to, but that's never stopped GM before....

 

 

 

 

I have non max tow 5.3 with 9.50 on my housing.

Stoddard Enthusiast

Stoddard

Posted
Posted

Nice find! I hadn't noticed that--it's kind of hard to see even with a lift, I found taking a pic with my phone easiest. I confirmed my 2014 6.2 3.42 also has 9.76" written on it.

 

Of course this brings up a couple more questions. If the only difference between the 9.76" and 9.50" really is just the ring and pinion, why did they feel the need to cast 9.76" into the housing? Can anybody with a 5.3 non-NHT confirm they have 9.50" cast into their housing? I know it would make no sense for it not to, but that's never stopped GM before....

I don't know specs by any means but the axle shafts and differential covers appear to be the same p/n between axles. I'll bet the pinion gear spacing is different for the larger ring gear needing a longer pinion snout.

Jon A Senior Enthusiast

Jon A

Posted
Posted

I have non max tow 5.3 with 9.50 on my housing.

 

Thanks. We now have a confirmed easy way to tell them apart. I'm guessing since they went to the trouble of making different castings, the R&P are most likely not interchangeable so one will need to know for sure before buying gears.

  • 1 month later...
Rme2513 Enthusiast

Rme2513

Posted
Posted

The 14 and prior 6.2 came standard with 3.42 and the NHT came with 3.73 the 15 with the 8 speed come standard with 3.23 and the NHT comes with 3.42 and I'm guessing there all the 9.76 rear end

  • 2 years later...
Sean Bourgeois New Member

Sean Bourgeois

Posted
Posted

I know this post is a couple years old, but I thought I should add what my truck has to this. It's a 2013 Silverado 1500 cc 4x4 with the 6.2l code L9H and the NHT max tow package, 3.73 ratio, I noticed some of you posted a pic of the diff cover with 12 bolts, mine is a 14 bolt. Factory stock, bought it brand new. I can post a pic if anyone is still poking around on this conversation. let me know.

  • 3 months later...
David Crandall Enthusiast

David Crandall

Posted
Posted
On 11/30/2017 at 3:14 PM, Sean Bourgeois said:

I know this post is a couple years old, but I thought I should add what my truck has to this. It's a 2013 Silverado 1500 cc 4x4 with the 6.2l code L9H and the NHT max tow package, 3.73 ratio, I noticed some of you posted a pic of the diff cover with 12 bolts, mine is a 14 bolt. Factory stock, bought it brand new. I can post a pic if anyone is still poking around on this conversation. let me know.

Not sure if you found an answer or any more info about the axle in your 2013, it's been a few months.

For 2014 there was a redesign of the axle. The new version of the 9.5 only has 12 bolts in the cover, and the previous versions were all 14 bolt. Parts are not directly interchangeable between the 12 and 14 bolt versions. I'm looking into upgrading my 2000 extended cab to a crew cab in the near future and have been researching the differences, also looking to make sure I end up with better towing capability as well. 

The only differences I can find between the 14 and up 9.5 and the 9.76 is the gears and the pinion bearings. I'm guessing the 9.76 uses larger diameter pinion bearings, leading the the different castings in the housings. I can't find all the bearing numbers to compare their sizes to verify for sure.

  • 2 weeks later...
Barman84 Enthusiast

Barman84

Posted
Posted
On 11/11/2014 at 7:22 PM, Antoine08 said:

It will cost less than 1k. I love my 6.2L but i can't leave things alone i put a 2" leveling kit and 33" tires didn't really affect performance to much, but would like to get a little extra power. I will do the maintenance myself with a few buddies so only paying for parts and beer.

Dude I just had my truck front and rear regeared to 4.10s for 2100 out the door with 4wp...  call them they’ll run your bin and tell you that or pull yournVin with a parts rep at the dealership.

  • 4 years later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,965
    Total Members
    8,960
    Most Online
    DaleB
    Newest Member
    DaleB
    Joined

  • Who's Online   1 Member, 0 Anonymous, 1,138 Guests (See full list)

  • Latest Articles

  • Posts

    • jgaudet99
      Tire psi

      By jgaudet99 · Posted

      My truck is a ¾ ton but my placard also says 80 for the rear tires, I think I might have the upgraded suspension to the 3500 series maybe.   I put my air down to 60 and the light was still on, and there was no way I was putting over 60 psi in the rear empty and not towing because I knew the actual number Toyo gave me and I didn't wanna ruin the center of my tires!   And you actually can change it in the settings from metric or is and it will show kph or mph then when you go into your tire settings it will be either psi or kpa, but it would be nice to just change it directly on the tire psi page 
    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      Common Sense Assembly   Your driveline is forgiving of the occasional mistake. It will even often forgive the random serious blunder. But it will not forgive a continuous bad habit.      What? Not everything needs to be a five thousand word essay.       
    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      We drove about 15 minute east today to visit a friend and saw a steep increase in price in the same county. About 50 cents a gallon steepper. 
    • Grumpy Bear
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Grumpy Bear · Posted

      Sure about that? A degree wheel and a dial indicator would lower your degree of assurance in that statement. 😉    It why we have offset keys and dialable timing sprockets. Just say'n.... I've built a few and have never seen one "On the money". 
    • Chuck FB
      Tire psi

      By Chuck FB · Posted

      I will admit I haven't experimented much with pressure drops beyond the numbers I put in and part of that is that the numbers I used are fairly low and then found out it would trigger regardless at that 35 psi. Having said that I had tried before had changed the placard pressures and being that I have a 1 ton set to 80 on the placard for the rear I believe it triggered close to 60, the front I don't recall now for sure but thought maybe it could get close to 45 from that factory 60 placard pressure. So I never did figure out if it was a number of psi from placard pressure to the alarm or a percentage of the total placard number as some figured it was like a 25% drop from placard pressure would trigger it. So as to try and answer your question, I believe I set the placard pressure on the front to 47 or so and while I run the front tires at 40, they have dipped below that some if its colder and I haven't put "winter air" in yet and never once have had the front alarm go off. I would say that the answer your looking for is no, that if you set your placard pressure to 45, you have a certain amount of room to drop below that pressure before the alarm will go off.    The pressures you decide to run in your truck, that ends up being what makes sense to you based on what your carrying in your truck or if towing, then have to bump them back up to something that will carry the load in the rear and the fronts typically left at the same pressure. It all comes down to that chart I put the link to and using an accurate roadside scale to be your guide, both unloaded and then loaded to know your minimum safe pressures.    I just wish GM would allow a person to change the readings for the tire pressures to the English system of pounds as I have to look at that goofy metric reading that will never ever jive in my head and will go over and change it just to figure out what they are if need be and then change it back. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...