4spd69RR
Well-Known Member
I have to agree with basketcase on this one, I don't think changing out the gears will give much more than 2 to 3 miles per gallon more. To me that is not enough difference for the time and effort to change out the gears. Now if you had 3:73, 3:91, or what I have in mine right know 4:56 I probably would change them.