Atlas 4 Speed Transfer Case

   Through the analysis of other successful transfer case designs, we have

manufactured a rugged, all gear-driven transfer case. Combining the latest in

CAD/CAM technology and years of in-house CNC machining capabilities, the Atlas

transfer case is sure to bring you the utmost in dependability and performance.

     The Atlas is available for both left and right hand vehicle applications with centered

rear differentials. The solid, one-piece case design is manufactured from 356-T6 heat-

treated aluminum alloy. This material is also used for the structural access cover and

all other exterior components. The massive gears are helical cut and synchro-

equipped for quiet performance and "shift-on-the-fly" capability. These gears are

supported by needle bearing elements, precision matched to strong 8620 shafts. The

ruggedly designed output shafts are amply supported by large taper bearing sets. The

Atlas also features a unique twin stick design to deliver crisp, quiet operation.

     The Atlas transfer case offers you the ability to customize the transfer case to your

vehicle. We offer several upgrades, options, and different configurations for this

transfer case. Listed on the following pages is all the information to make your

custom "made-to-order" Atlas the ultimate gear driven transfer case.

CASE:
Material: 356-T6 Heat Treated Aluminum
Weight: 125 lbs. (dry)

INTERNAL COMPONENTS:
Gears: Helical Cut
Planetary Gears: 6 Gears Helical Cut
Bearings: Needle & Taper Rollers
Synchronizers: Borg Warner
Available Input Shaft Splines: 21, 23, 27, 29, 31, 32, 34
Tail Shaft H.D., 32 Spline,
Front Output 32 Spline

RATIOS:
Low Range: (2.0:1, 2.72:1, & 5.44:1) or (2.72:1, 3.8:1, & 10.34:1)
High Range 1:1

LUBRICATION:
Quarts: 2.5
Liters: 2.36

We are currently shipping Amsoil GL4 with all new Atlas units, this along with the

 other lubricants that are printed in our Atlas Installation Guide are the recommended

fluids for the Atlas.

LENGTH COMPARISON:

*Atlas Short tail 15"

NP 231, 20.5"

*Atlas Long tail 17"

NP241 Rock Trac T/C, 15-1/4"

Dana 300, 12"