NP205 3-to-1 LoMax Complete Transfer Case

JB Conversions, Inc.

Part #2840 -- $2,815.00 (10-spline)

Part #2841 -- $2,815.00 (32-spline)

Input Gear Applications:

  • GM 32 Spline
  • GM 27 Spline
  • GM 10 Spline

Bolt Patterns:

  • GM 6-Bolt Round Pattern (2 patterns allow "clocking" choices)
  • GM Figure 8 Pattern (common to SM465 applications)

JB Conversions LoMax 205

LoMax 205 Bolt Patterns

The LoMax 205 transfer case truly stands in a class by itself. The original New Process 205 has always been recognized as The King of brute strength in transfer cases. The LoMax 205 retains all of the benefits from the original NP205 and goes several steps further. The LoMax case is a nodular iron casting machined to exact tolerances taken from the original New Process drawings. Aside from the stronger nodular iron recipe, the LoMax case offers more internal ribbing and wall thickness than the original NP205.

The 3:1 gear set offered in the LoMax transfer case is stronger than the original New Process gears. The tooth width is wider than stock yet the overall case dimensions are equal to stock New Process design. This means there are no modifications required to your truck. Driveshafts, shifters, etc. are retained in their original form.

JB Conversions LoMax 205

JB Conversions LoMax 205

Is 3:1 enough?

Is 3:1 enough?

Consider going from 3.72 to 5.58 AXLE GEARS. This is the same percentage of gear reduction you are getting with the LoMax transfer case gears.

The chosen ratio of 3:1 was dictated by customer demand. Consideration was given to a 4:1 case however our customers were concerned over loosing too much wheel speed at the sacrifice of gear ratio. For this reason, 3:1 has proven to be the best ratio for all-around performance in the big truck class.

Each LoMax 205 is assembled with the following upgrades:

  • 32 Spline rear output shaft with "bolt-on" 1350 yoke.
  • 32 Spline front output shaft with 1350 yoke.
  • LoMax gears with 3:1 low range reduction ratio.
  • LoMax nodular iron case with optional mounting patterns.
  • New bearings, seals, and small parts.

Options are availble for:

  • Billet bearing retainers
  • 1410 yokes
  • "Twin stick" shift rails

JB Conversions LoMax 205

32 Spline Front and Rear Output Shafts are standard on the LoMax 205

JB Conversions LoMax 205

LoMax nodular iron case with optional mounting patterns


Comparisons:

JB Conversions LoMax 205

Low gear comparison - New Process vs LoMax

JB Conversions LoMax 205

Intermediate gear comparison - New Process vs LoMax

JB Conversions LoMax 205

Intermediate gear comparison - Atlas II vs LoMax

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