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Posted by Joe Cimoch [68.189.254.50] on Friday, September 07, 2012 at 22:23:40 :
In Reply to: Re: Power Giant Dana 70 4:10 gears posted by Josh [68.102.10.185] on Friday, September 07, 2012 at 09:55:56 :
Some Dana 70 info and links.
http://en.wikipedia.org/wiki/Dana_70
http://www2.dana.com/pdf/5312-9.pdf
Pinion Offsets
There are three pinion offsets for the Dana 70 rear axle. 1/2 inch, 5/8 inch and 31/32 1/2 pinion offset and were found in Dana inch offset. The first Dana 70 axles had a 70HD's as well. The drawback with the 1/2 inch offset was that a 4.10:1 gear ratio was the highest gear set possible. In the 1970s the 1/2 inch offset was phased out for a 5/8 inch offset that allowed for higher gearing. The 5/8 offset was used in all the major variations of the Dana 70 and is still being used today. A 31/32 inch offset was used for a short time in the late 1980s to the early 1990s to allow even higher gears than the 5/8 offset could offer. Only the Dana 70-3HD used the 31/32 inch offset.
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