Changing differential gears
WWould like to hear from those that have actually changed their rear-end ratios. Did you get any improvement? Was it worth it? Any pitfalls?
Forum Discussion
Real benefit if you feel you can't use all the gears much when towing. My truck has an old 4 speed (4R70W) and would barely hold 3rd when towing so basically I had a 2 speed trans. After swapping 3.55 to 4.10 I easily hold 3rd gear and can periodically cruise in 4th (OD). Less effect if you have a newer 5 or 7+ speed transmission. Still if you can only use half the gears it is time for the differential to change.
