Sure grip 7 1/4 strenght?

Hello Hipo65!

From my understanding its the 7 1/4's axles that are weakest of all the internal parts of this particular rear differential. Most 'none sure grip style' 7 1/4 rear ends fail due to the axle splines stripping away. The idea is that distributing the torque between both axles will prolong the life span of the axles and give the 7 1/4 more ability to handle increased loads/torque output.