what happened to my posi

[73 challenger 440]

it's been a while since I posted, I hope this is in the right part of the forum.. but last summer I swapped over from 235's to some 295's on the rear. for some reason my posi rearend doesn't always work.. I checked the tire pressure to be sure they are the same..  just the passenger side will spin...

[GoodysGotaCuda]

is it old? just could be worn out. 

[Chryco Psycho]

if it is ia clutch type it can be rebuilt , if it is the later cone type you need a new one

[73 challenger 440]

is there numbers i could look for to see what kind it is?? if it's a clutch type could it be just in need of some fluid change?? I really dont believe it's more than a a several years old. the trans, rearend and engine were done close together. from what I was told... I haven't checked for any leaks...

[Chryco Psycho]

you would have to pull the carrier to tell

[TreeFrog]

uhhhho you done gone and broke it!