65-70 Posi Rear End Identification

[addy]

I'm considering buying a posi rear end. All the owner knows about the rear end is that its from a V8 mustang. I have a 65 mustang coupe. I want to know what year mustang this is out of so I know if it is a direct bolt on or if it will require any modifications. I also would like to confirm that it is a limited slip rear end and not a locker. There is no ID tag on the rear end so im not sure if it is possible to identify it. Thanks in advance for any feedback.

 

[addy]

here are unzipped pictures

 

[horse sence]

looks like an 8 inch 65 or 66 Do you have a pic of the axle tubes where the U bolts would bolt ?

 

[horse sence]

A limited slip will turn both wheels the same direction but if some one holds one wheel and someone else turns the other wheel a limited slip will break loose enough to turn but it will have a lot of drag .A Detroit locker will turn if some one holds one wheel but you will hear a clanking sound of the locker ratcheting .

 

[addy]

Thanks, that helps a lot. ? I don't have pics of where axle tubes where the U bolts would bolt. Also, horse sense what would it do if it was ad open differential? Only one heel would spin if you turned it right?

 

[horse sence]

Yes only one side would turn and you could easily hold the other

 

[horse sence]

If it is a 65-66 housing the axle tubes will step down before the U bolt pads .If it is a 67 -70 the tubes will be the same size all the way.

 

[addy]

I think it is a 65/66 housing then because it seems to step down like you said, right?

 

[horse sence]

Yes 65 -66

 

[addy]

Ok thank you for your help.