20 years ago i bought a 73 satellite with a swapped axle. the seller/ previous owner said that I shouldn't drive long distances at 80 mph because it was a 4.11 geared axle, and that it couldn't take it regularly (driving an hour south to jacksonville, fl) and back daily...
Oh well, with an OD and a 4.10 the final drive is dependent on the OD ratio. Lets just say it's .68 since that's very common. That means in OD, your rear gear is effectively a 2.78. So yeah, that can cruise the rest of your life at 75MPH.
