Bought a 9" rear from an 80's F150.



The axle ID listing on fordification skips from S314 to S316 so it's no surprise I have a S315a. (I tend to wind up with things that aren't listed.)

Id tag says gear ratio is 2L75. Any idea which locker they would have used with a 2.75 ratio ? Power Lock, Trac Lock etc...

 

Any one able to identify this rear end?


(Sorry for hijacking your thread )

 

The L on the axle tag stands for limited slip.

 

Agreed but which one did they use on the mid 80's F150?

 

You're thinking of actual lockers by the sounds of it. Limited slip is not the same as a locker.

 

The only available factory traction option in these trucks was the Ford trac-loc clutch pack style limited slip diff.

 

That's the info I was looking for, thanks Conanski !