7.5 posi upgrade

Topic: 7.5 posi upgrade (Read 1075 times) previous topic - next topic

7.5 posi upgrade

June 15, 2006, 07:26:00 PM

I want to change the back end of my 84 tbird to a posi trac. I am looking for a unit to put in. How do I identify that it is a posi unit.

Can anyone tell me what these part numbers are? E87W and the letters AB below that.
Thx
JrP

7.5 posi upgrade

Reply #1 – June 15, 2006, 10:38:12 PM

I am taking the 7.5 out of my 86' and putting in an 8.8 from another car into it. It is an aftermarket posi w/4.10's in the 7.5 now. Car would actualy chirp a bit if turned to fast because of the posi, if you are interested, let me know. I'm in Lebanon, Ohio 45036. Car is presently in Owensboro, Ky right now though.

7.5 posi upgrade

Reply #2 – June 15, 2006, 11:27:21 PM

if its a locker it will say something to the effect of 3l73. For 3.73 locker. I got one out of a turbo mark 7