gear ratio and gas milage

[Ieatcamaros]

Yeah, they whine cause the backlash isn't properly set (shims). I have seen some that whine and all it took was tightening of the pinion nut (crush sleeve) to get it to stop. My fms 4.10 gears whine but they only have about 150 miles on them. I am gonna drive it a little more and see if it quietens up. If not, I guess I will be back into it again. Backlash was set at .009 and it had a good pattern on it too.