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The problem with the 61 is not necessarily itself, its just that its an oddball thats often mistaken for the D60 but isn't, so if you buy a set of gears for a D60, it won't fit the D60. I forget what is all different, but I just remember hearing my partsmen talking about it.
The problem with the 61 is not necessarily itself, its just that its an oddball thats often mistaken for the D60 but isn't, so if you buy a set of gears for a D60, it won't fit the D60. I forget what is all different, but I just remember hearing my partsmen talking about it.
Was there ever a semi-floating D60?
Yeah, there were semi-floating Dana 60s. In fact a lot of the big block and Hemi MOPAR muscle cars had them.
Ford used them in trucks from '67-'69 in F-100s and again from '80-'85 in F-250s but NOT diesels. It was known as a 60-2.
The Dana 61 was made for Ford starting in'74 so they could have higher gear ratios for fuel economy reasons. A std. Dana 60 can only have a ratio as high as 3:31. The pinion off-set was increased 7/16 to accomidate the higher gears. It was also available as a semi-floater.
For a while now you have been able to get the "thick" gear sets to change the ratio all the way up to at least 4:10s. As a bit of trivia I think this is the ONLY 60/70/80 series Dana axle that you can get 4:11 gears for (Yukon Gear) everything else is 4:10s.
The full floater is a 61-1
semi floater 61-2
Dodge also used front 61s in MOST of the first Cummins powered trucks. Since they had no over drive trans. until '91 in the diesels they used 3:07 gears.
This combination actually works really well with a diesel's low-end torque. Ask the 2wd Ford diesel guys with 3:07s and they'll usually tell you the same thing.