At what point to go Dana 60 ??????

keith340 said

im running a 500 hp 360,4speed with 6.14 gears and have never had problems with my 8 3/4. with slicks at the track or pro street tires,had my car for 32 years

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Here is a page from a book I have that explains the inherent weakness of not only the 8 3/4 but any axle of this style.
A Salisbury style axle by design is inherently much stronger because it uses the axle tubes to stabilize the bearing caps from spreading.
Read middle column near the bottom.