Gear ratio option in glove box?
 

I am looking for a specific ratio rear diff. 3.73 14bff. I am going back and forth with a seller that has a 91 R20 Burb and there is no tag on the diff.
I got him to snap a pic of the spid(?) on the glove box.
Can anyone help?

Re: Gear ratio option in glove box?
 

Rpo gt4 = 3.73.

K

Re: Gear ratio option in glove box?
 

and it has the g80...govlok diff...

Re: Gear ratio option in glove box?
 

G 80 is posi

Re: Gear ratio option in glove box?
 

Gov/Lok...Posi...limited slip. Can someone tell me what the difference is on these various rear diff items? Thanks.

Re: Gear ratio option in glove box?
 

google each one and you'll have more answers than you know what to do with..

Re: Gear ratio option in glove box?
 

Sweet! That is the ratio I need. Fingers crossed that it is still that.


Thanks guys.

Re: Gear ratio option in glove box?
 

JB7 means that axle is setup for 8400GVW brakes with 13" x 2-1/2" shoes. Not surprising with the Z82 towing package.