Re: Dana 60 vs. Dana 60 HD
Ok here goes, semi floater 60's were a real popular axle for 80's model Ford
3/4 tons, the majority of Ford vans that look like they have one are
actually Dana 61's. all of the SF 60's in the Ford trucks were 1.31" / 30
spline axles. All of this applies to trucks only, I've never researched the
car 60's. Special note : stay away from the Dana 61's as they are physically
restricted to very high gear ratios (3.07, 3.23, etc.).
Full floater 60's (regular) can usually be found in some Fords but are
mostly in Dodge trucks (both 3/4 ton and 1 ton). The vast majority (but not
all) have 1.31" / 30 spline axles, some could come with 1.50" / 35 spline
axles but they are extremely rare.
Most full floater 60HD's still come with 1.31" / 30 spline axles. There are
60HD's with the bigger (1.50" / 35 spline) axles but they are scarce. The
biggest differences on the 60 HD is the housing, which is cast with more
webbing across the center section, and the carrier has larger bearings than
a regular 60. No all, but most, 60HD's have bigger brakes as well. Just
because it has "HD" cast on it does not guarantee you get bigger axles.
I have 1 60HD myself and a friend that has 3, none have the big axles.