8 3/4 vs 8 1/4 weight

In the original magazine article of the Dana vs 8-3/4, they said that part of the reason a Dana ran the same time as an 8-3/4 with weight penalty was due less to the greater mechanical efficiency of the Dana axle as it was that the 8-3/4 housing actually was flexing enough to cause the rear tires to toe in. There have been some users claim that an 8-1/4 axle upgraded with the LPW girdle and back brace kits with 29 spline positive retention axles will live in a big block a body as well an 8-3/4 will.