Swapping out ring and pinions

[Aesellitto]

I have a differential question for everyone. I have a 72 charger with the 8.25 rear end. The car has 2.73 gears in it right now. I have a set 3.55 gears at home I want to put in it. Do I need to replace the carrier to make the swap?

 

[WP29440SE]

No. It is a direct ring and pinion swap. I just put a 321 onto a 271 open carrier. I did need a new crush sleeve to get the preload right. You may want to replace the pinion seal while you're in there

 

[Aesellitto]

No. It is a direct ring and pinion swap. I just put a 321 onto a 271 open carrier. I did need a new crush sleeve to get the preload right. You may want to replace the pinion seal while you're in there

Awesome! I just did not want to tear the axle apart only to find out the hard way that I needed a different carrier. Thanks for the info.

 

[Moparmaniacjohnny]

I have a differential question for everyone. I have a 72 charger with the 8.25 rear end. The car has 2.73 gears in it right now. I have a set 3.55 gears at home I want to put in it. Do I need to replace the carrier to make the swap?

I have done this with my 8 3/4 rear on my 73 charger Rallye , I would however recommend , changing out the roller axle adjustment bearings to solid green bearings , I also ditched the crush sleeve and put Ina solid spacer with shims , do it set it once and finished , I'm changing out my orig 3:23 to 3:91 on a 28 inch tall rear tire , 550 horse 340 , full race with 3500 stall built 727 and the 8 3/4 is built bullet proof arp carrier bolts and studs and nuts and up grading the u joint straps to billet solid and stronger with arp bolts as well , build it right build it once !