10 bolt posi rearend identification

[Hubb79]

What's up everyone, I just took my rear end cover off to replace the fluid and put on a new cover and I was trying to find out what type of rear end it is I know it's a posi but I don't know if it's a certain type or if all of them are the same for a 7.5 Thanks

 

[olds307 and 403]

Torsen posi.

 

[79 USA 1]

Looks like a Torsen unit. Probably has 28 spline axles.
Here is the same unit for sale on E Bay.

GM 10 BOLT 7.5" 7.625" Torsen Posi 2 Series Differential Carrier 28 Spline USED | eBay

Find many great new & used options and get the best deals for GM 10 BOLT 7.5" 7.625" Torsen Posi 2 Series Differential Carrier 28 Spline USED at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[Olgambler84]

Looks like a Torsen unit. Probably has 28 spline axles.
Here is the same unit for sale on E Bay.

GM 10 BOLT 7.5" 7.625" Torsen Posi 2 Series Differential Carrier 28 Spline USED | eBay

Find many great new & used options and get the best deals for GM 10 BOLT 7.5" 7.625" Torsen Posi 2 Series Differential Carrier 28 Spline USED at the best online prices at eBay! Free shipping for many products!

www.ebay.com

Would I be able to swap this in my non posi unit?

 

[1320John$$$]

Would I be able to swap this in my non posi unit?

If you have 2 series gears and 28 spline axle YES

 

[79 USA 1]

Would I be able to swap this in my non posi unit?

Yes, as long as you have 3.08 or lower gears OR aftermarket 3.23 and up "Thick" gears designed for a 2 series carrier.
You would also need 28 spline axles. 8.5 Grand National, 442 axles will work but there are many aftermarket company's that have them.
I purchased KA 28 spline axles from Toms Differentials.
https://tomsdifferentials.com/

 

[ssn696]

You’ll need to shorten the diff ends of the GN axle shafts about 0.080” to fit the C-clip feature in the diff. And the GN axles take 8.5” axle C-clips which have a larger internal diameter but the same 7.5” axles’ outer diameter in the diff C-clip feature.

 

[ssn696]

Warning: typo! Machine 0.080” off the end…