Description of the Dana 70 Front Axle for Sale
Find auto parts are the best seller of Dana 70 front axle for sale. It is a reinforced axle that has a GAWR of approximately 10,000 lbs. to 3,500 lbs., which is much greater than that of the Dana 60. Dana 70 front axles are quite rare. Its most common applications are rear differentials, mostly as a dual rear wheel configuration.
Dana is offering factory-installed limited-slip differentials in the Dana 70, marketed as the “Power-Lok” or “Trac-Loc” differential. An even heavier duty version, the Dana 70HD, was built for medium-duty trucks and some high GCWR Ford, GM, and Dodge dually. The 70HD had larger electronic parts such as 4.00-inch axle tubes, bigger bearings, and a higher GAWR than the standard Dana 70.
GM started to make 4X4 Chevrolet Kodiaks and GMC Top kicks. Both used the Dana 70 front axle in all their models from 2005 to 2009. Their ball joints and open knuckles provided an edge over other alternatives. It had a GAWR weighing 8000 lbs and came only in one gear ratio, i.e., 5.13:1. The use of 1550 metric universal joints made a huge difference from the previous Dana 70 front axles. It also had a high pinion and a reverse cut axle. The latest 4×4 medium-duty truck models, such as the 4500, 5500, and 6500, use Dana 60. The reason is that the front Super 70’s manufacturing was discontinued after 2009. Also, Ford kept manufacturing trucks using the Dana 60.
Features of the Dana 70 Front Axle
The special features of the Dana 70 front axle include a rear gear that is 10.5 inches, and the axle tube is 3.5 inches, or 89mm, in diameter. Its inner axle shaft spline has the counts as follows: 23, 32, 35. The pinion shaft splines 10 and 29 have a diameter of 44mm and the amazing gear ratios are 03.07:1 to 7.17:1. The axle shaft diameters at the front and rear are 36mm and 38mm respectively. The axle spline diameters at the front and rear are 38mm each. The front axle has a 1480 universal joint. Also, the Dana 70 front axle is rare because of the matching attributes with the Dana 60. The best thing about the Dana 70 front axle is that it has better gross axle weight ratings than the Dana 60.
History of the Dana 70 Front Axle
Dodge used the first Dana 70 for the first time in the year 1958 in the W300. International usage started in the late 1960s with the Dana 70 front axle. It was used by both companies until the mid-1970s when it was discontinued by Dodge in 1979. All these Dana 70 front axles had closed knuckles with kingpins and GAWR weighing 6000 lbs. Similar to the Dana 60, the Dana 70 front axle also started with 23 spline axle shafts and upgraded to 35 spline axle shafts. During this period, Dana also provided a “Power Lok” limited-slip differential for a few of these axles.