Dana 30 Gears and Information
The Dana 30 is an axle most commonly found of the front of Jeep vehicles. Wrangler, Cherokee, CJ5, CJ7. It can be of standard rotation or reverse rotation. Many modifications are done to the Dana 30 such a disc brake conversions, manual hub conversions, and axle shaft upgrades.
Dana 30 QuickLINKS
Dana 30 Gears
Available gear ratios for the Dana 30.
The Dana 30 has a variety of gear ratios ranging from 2.72 to 5.38 for standard rotation setups and 2.73 to 4.56 for reverse cut setups. Here are the Dana 30 ring and pinion ratios in the following format...Ratio: Ring Gear Teeth/Pinion Gear Teeth
2.72: 49/18
2.73: 39/11 (Reverse Cut)
3.07: 43/14
3.31: 43/13
3.50: 42/12
3.54: 39/11
3.54: 39/11 (Reverse Cut)
3.73: 41/11
4.10: 41/10
4.27: 47/11
4.56: 41/9
4.88: 38/8
5.13: 41/8
5.38: 43/8
Shop for new Dana 30 gears or used Dana 30 gears.
Dana 30 Lockers
Available locking differential units for the Dana 30.
Note: This section is about lockers and limited slips. If you don't know what they are, then you can read this article about axle lockers.A Dana 30 locker will provide guaranteed power to the drive wheels in any condition, on or off-road. Currently, there are several lockers on the market made for the Dana 30.
The ARB Air Locker is an on-demand locker that activates at the push of a button. Compressed air engages a mechanism that locks the internal gears together. The ARB Air Locker part numbers for a Dana 30 axle are RD100, RD101, or RD104 (depending on your application).
The OX Locker is an on-demand locker that activates at the twist of a lever. A cable engages a mechanism that locks the internal gears together. The OX Locker part numbers for a Dana 30 axle are OXD30C373H-27 or OXD30C373H-30 (depending on your application).
Torque Specs
Dana 30 front axle torque specifications.
The Dana 30 has two different types of torque settings: Assembly and In-Use.
Assembly settings are used when you are reassembling components.
In-Use settings are used when you are checking the specs on pre-torqued components.
The following list indicates the Component Name followed by the Assembly Torque in foot-pounds followed by the In-Use Torque in foot pounds like so...
Component Name -- Assembly Torque -- In-Use Torque
Axle Housing Cover -- 20 -- 15-25
Differential Bearing Cap Bolts -- 40 -- 35-50
Drive Gear-to-Case Bolts -- 55 -- 45-65
Lower Ball-Joint Nut -- 80 -- N/A
Pinion Yoke Nut -- 210 -- 200-220
Universal Joint U-Bolts -- 15 -- 13-18
Upper Ball-Joint Nut -- 100 -- N/A
Upper Ball Stud Seat -- 50 -- N/A
Wheel-to-Hub Nuts -- 80 -- 65-90
Assembly settings are used when you are reassembling components.
In-Use settings are used when you are checking the specs on pre-torqued components.
The following list indicates the Component Name followed by the Assembly Torque in foot-pounds followed by the In-Use Torque in foot pounds like so...
Component Name -- Assembly Torque -- In-Use Torque
Axle Housing Cover -- 20 -- 15-25
Differential Bearing Cap Bolts -- 40 -- 35-50
Drive Gear-to-Case Bolts -- 55 -- 45-65
Lower Ball-Joint Nut -- 80 -- N/A
Pinion Yoke Nut -- 210 -- 200-220
Universal Joint U-Bolts -- 15 -- 13-18
Upper Ball-Joint Nut -- 100 -- N/A
Upper Ball Stud Seat -- 50 -- N/A
Wheel-to-Hub Nuts -- 80 -- 65-90
Jeep CJ Dana 30 Parts
An exploded view and list of parts for the Jeep CJ Dana 30.
Other Dana Axle Information
by DorianJ
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