Hello Olds Guys,

I am selling a olds 12 bolt type O rear end posi w/391 gears. My name is Patchi from Miami Fl. You can call me 786-285-7926 or email me patxiarnaiz@gmail.com. The rear has new bearings and has been sand blasted and primered and painted. I am asking $1695. I can send you pictures if you send me your cell phone or email.

 

Do you know what year it is? There were two versions: early (1967-1969) and late (1970). Early had sealed axle bearings with the oil seal pressed into the end of the tube; late had open taper bearings with the seal sandwiched between the bearing and the axle retainer.