Why would the previous owner do this?

Explain please ???

:happy1:

The smallest diameter of a 741 is EXACTLY the same as a 742 ... the STRONGEST , and a 489 , technically the weakest with the POS crush sleeve still installed ... the section of the pinion shaft were the outer pinion bearing rides and I have yet to see ANYONE say they broke a pinion there .

:happy1:

You really need an explanation? When you turn a corner, the rear axles have to turn at different speeds to keep from scrubbing the tires. With the spider gears welded together, they cannot turn different speeds, hence no differentiation. It is essentially a spool. A poor one at best. With stock axles, too. Either the welds always break loose, or an axle eventually breaks. You can imagine the mayhem if the welds break loose. they almost always do. Now, welding the side gears to the case like somebody else spoke of would work pretty good, I imagine especially if you used a good set of axles.