how can i find out what rear ratio ?
i found out that someone at some point replaced the rear end in my car, and i can thank them for that, cause it is trac-loc , leaves 2 nice black marks on dry pavement. my car is automatic trans. is there a way to tell if its a 3.08 ,3.27 gear etc. i have checked my rpm's at these speeds, this is what i get in overdrive....
55 mph= 1400 rpm's
65 mph= 1700 rpm's
thanks for any help