8.25” gears/sure grip

Camtron

Well-Known Member
Joined
Apr 25, 2019
Messages
1,814
Reaction score
1,376
Location
US
With brotherGoods help, I’ll have a 8.25” rear end for my Fifth Ave in no time.
It has the 2.94 carrier in it so, I should be good to go grab gears and limited slip out of a Jeep, Dakota or Durango, right? It’s just the smaller 2.45 housings that people end up running into issues with?
Either way, I’m happy to get the 7.25” out of my car. The 8.25” will be more than enough for anything I’m planning on doing to the car.
 

BudW

Moderator
Staff member
Joined
Mar 4, 2012
Messages
5,121
Reaction score
1,485
Location
Oklahoma City
The 8¼” axle spine count changed in ’96 – but that only affects the axle shafts and spider gears (or carrier).
The ring and pinion gear set is not affected by axle spline count – unless you are also changing the carrier (the part the ring bolts to) as well.
8.25 Carrier.jpg


As far as I’m aware, all Chrysler 8¼” ring and pinion gear sets made from ’68 to present (including pickups, vans and Jeeps) will interchange, as a matched set - with the exception of the high ratio gears.
The 8¼” carriers (above picture) are where the gear ratio difference matters. If you currently have 2.93/2.94 gears, then yes, 3.55, 3.73, etc. will all fit.

If you have an 8¼” with 2.2 gears, to change to lower gears, you would also need to change the carrier as well.


When looking at jeep gears, it can be easy to get a Dana 35 and Dana 44 mixed up with the Chrysler 8¼” – for some came with all three differentials as an option.
Dana 35 has a 7.6” ring gear and Dana 44 is 8.5”

To make it more confusing, the 8¼” cover is oval shaped
8.25 63-12 RDS55047.jpg


As well as the D35
D35 Gasket.jpg

Both versions use 10 bolts.

The D44 is easier to tell apart
D44 Gasket.jpg

But then it gets confused with the Dana 60
D60 Gasket.jpg


Did this help, any?
BudW
 

Camtron

Well-Known Member
Joined
Apr 25, 2019
Messages
1,814
Reaction score
1,376
Location
US
The 8¼” axle spine count changed in ’96 – but that only affects the axle shafts and spider gears (or carrier).
The ring and pinion gear set is not affected by axle spline count – unless you are also changing the carrier (the part the ring bolts to) as well.
View attachment 36457

As far as I’m aware, all Chrysler 8¼” ring and pinion gear sets made from ’68 to present (including pickups, vans and Jeeps) will interchange, as a matched set - with the exception of the high ratio gears.
The 8¼” carriers (above picture) are where the gear ratio difference matters. If you currently have 2.93/2.94 gears, then yes, 3.55, 3.73, etc. will all fit.

If you have an 8¼” with 2.2 gears, to change to lower gears, you would also need to change the carrier as well.


When looking at jeep gears, it can be easy to get a Dana 35 and Dana 44 mixed up with the Chrysler 8¼” – for some came with all three differentials as an option.
Dana 35 has a 7.6” ring gear and Dana 44 is 8.5”

To make it more confusing, the 8¼” cover is oval shaped
View attachment 36458

As well as the D35
View attachment 36459
Both versions use 10 bolts.

The D44 is easier to tell apart
View attachment 36460
But then it gets confused with the Dana 60
View attachment 36461

Did this help, any?
BudW
Absolutely helped, Bud. Thank you so much.
 

volare 77

Well-Known Member
Joined
Jun 12, 2014
Messages
1,415
Reaction score
203
Location
maryland
I have a 8 1/4 NOS sure grip for the 2.45 ratio if anyone is looking for one.
 
Back
Top