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

  • Latest Articles

  • Posts

    • BCGM
      Recalls 2024 Chevrolet HD

      By BCGM · Posted

      JW2024 and Others is this site for Oshawa built Trucks as well ? Thank You !
    • BCGM
      Remote Start Noise 2024 2500 HD Gas

      By BCGM · Posted

      Thanks JR that would be great if you could do that !!! Do you have a link to where this was discussed before ? I cant seem to find it  Thank You Again !
    • Another JR
      Remote Start Noise 2024 2500 HD Gas

      By Another JR · Posted

      Oil pump noise was discussed before.  I will try to remember to record a remote start later this morning. 
    • Chuck FB
      MPG at 600 miles

      By Chuck FB · Posted

      There are probably a few threads talking about fuel mileage but this one seemed to fit the stats I have seen based on my typical local driven route but with different outcomes based on different seasons/temperatures. I have a few hundred pounds of items that consistently ride on the truck at all times such as a bak flip cover, rubber bed mat, tools and extra fuel so I would be something over 8100 lb without me in the truck. All these examples are based on a 100 mile round trip to a town plus running around town so maybe 110 to 120 miles in total for a trip. Using regular fuel and I assume it always has some ethanol in it but don't know the percentage they blend in. Also speed wise I am going at 62 mph and non aggressive driving although less speed yet if its crappy winter condition roads. I am going by an initial reset of the computer generated fuel use numbers averaged over a couple of thousand miles or so for each weather/season so they may be more optimistic then actual hand calculated numbers. Basically this is painting a picture of doing the same drive but seasonal conditions and temperature being the major variable to the end result. Oh and although I am in Alberta Canada, I am converting it to miles per US gallon so there is no confusion.    So winter time it gets cold here, no real surprise there and the roads can be clear at times but also often have packed rough snow or are are driving through loose snow ( they do a poor job of plowing the highways ) and yes this includes the extra idle engine time due to trying not to freeze ones butt off. 12.7 mpg is what I was getting during the winter months on average.    Then during the spring when it was around the freezing point and the highways are clear of snow, I was getting around 14.25 mpg.   Summer time, I have been getting around 15.15 on average but certainly some of the trips showed quite a bit better fuel mileage, so much depended on how much or little I had driven around town and number of engine restarts after sitting for a while at each location. But stating a best fuel mileage trip to town pretending that is what the truck gets on average is fooling ones self for sure !.      As I said in a different post, I had driven a 645 mile trip over a couple of days stint to a different destination then these other daily to town examples above, and was done during the summer with nice weather and not bucking a head wind, also keeping at 62 mph and its a rolling landscape type highway drive ( this isn't southern Alberta or Saskatchewan flat lands ) Hand calculated fuel mileage in this case though and it came out to 17.65
    • Chris80s
      Factory front brake rotors...defect?

      By Chris80s · Posted

      On my wife's 2020 Blazer (~69000 miles), we started to notice the brakes pulsating at faster speeds. Typically around town you don't notice anything, but highway/interstate driving you will notice it. I decided to pull of the front tires and look at the brakes. I figured with the milage, the pads should be wearing out to their life span, but they actually looked decent. Still with "meat" on them. One pad has a ridge wearing in it, and that same rotor is showing the ridge too. That's not the concerning part...the other rotor appears to have a raised bump on it!  The picture make it look like a pimple! Very odd and strange! NOTE: These are the factory brakes and rotors.   I'm attaching pictures of the front brakes and what they look like ate ~69000 miles.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...