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Axle - Dana 70 Specifications
 
 
Dana 70 - Axle 
Ring Gear Size:
10.5" (Same as 14Bolt)
Axle Splines Available: 23, 32, 35
Gears Ratios Available: 3.54, 3,73, 4.10, 4.56, 4.88, 5.13, 5.86, 6.17, 7.17
Locker Options: Lockright, Detroit, ARB, Powr Lok
Cases/Carriers:
  • 32 SP 4.10 Standard
  • 32 SP 4.56 Standard
  • 35 SP 4.10 Standard
  • 35 SP 4.56 Standard
  • 32 SP 4.10 Powr Lok
  • 32 SP 4.56 Powr Lok
  • 35 SP 4.10 Powr Lok
  • 35 SP 4.56 Powr Lok
  • 35 SP 4.10 Standard HD
  • 35 SP 4.56 Standard HD
  • 35 SP 4.10 Powr Lok
  • 35 SP 4.56 Powr Lok

There have been several models of the Dana 70:
70, 70U, 70U-1, 70U-2, 70B, and 70HD

  • The diff covers are interchangeable between the 60s and 70s
  • The 70 housing is much larger and stronger than tany of he 60s
  • Lowest point on a 70 is the same as the 60 (6" from the axle centerline)

All the 6 lug Dana 70s have 23 splines on 1.5" shafts (M715 Millitary Jeep truck)
There is also a 32 spline 1.41" shaft

All civilian duty truck versions have the common eight-lug pattern




 

Model/Version
 Years
Ford E350, F350
78 & 96
Chevrolet G300
78 & 96
Dodge DW300
78 & 96
Chevy 1 Ton
74 & Before
Dodge 1 Ton Various Models
74 & Before
Ford 1 Ton Various Models
74 & Before

 

Assembly Specifications
Cover Bolt Ft. Lbs. 30-40
Pinion Brg. Preload In. Lbs 20-40
Pinion Nut Ft. Lbs. 220-280
Ring Gear Backlash 005-.008
Ring Gear Bolt to case Ft. Lbs. 100-120
Side Brg. Caps Ft. Lbs. 80-108