8.75 rear end info

[cuda-cable]

Have a 340  4 gear in my cuda.  Looking to put a 3.55 gear set in it.....don't  drive much hiway. Don't  thou have a clear idea  of how  these are different in operation.........Detroit locker, lockright, auburn gear.....all in
Randy's  ring and pinion,  also  what  did Chyrsler use back in 70's for a posi?.....thx......dk

[Chryco Psycho]

In 70 Mopar had a cone / Auburn style sure grip , in the 60s they used a better design clutch rebuildable sure grip unit , the detroit lockers is a totally different design & can be harsh   

[lee baker]

I have a complete 8 3/4 rearend with drum brakes that is out of my 70 challenger. It has about 2000 miles on it since it was rebuilt and new brakes. It has a factory posi unit with 3.90 gears. If you are interested you can call me. I want $650 for it complete. My number during the day is 716 649 7354. Thanks Lee