<strong>How Did It Drive?</strong><br />Finally changing the axle gear ratio on our truck had a really positive effect on the drivability - actually more than we expected. Once again we can start in second gear when the truck is unloaded. And the engine's rpm in overdrive are at 1650 when going 65 mph (which is exactly at the torque peak).Eaton's Truetrac limited slip differential is one of those upgrades you will probably forget about after installing. Testing in various conditions has shown it to be smooth, quite, and very good at limiting wheel spin. We like that it does not need to be activated, like a selectable locker, and is always there to help with forward progress either on the road or off.