quicksilvr

What was the HD t-case and was it a separate option in '02 or did it come with a certain trans.

TIA,
Eric

Stormin_Norman

The HD tansfer case option was just a PTO mounting plate as far as I know, the rest of the case was the same as the standard version.

jefe4x4

From Geno's:

"The NV241 is essentially a NV231HD with six gears in the planetary set.

The NV241D is a heavier duty Dodge version of the 241, with a larger input shaft and larger bearings to withstand the torque of the V10 and diesel engines.

The NV241HD, an option on Ram 2500's and standard on Ram 3500's built after 1998, has a stronger case and wider drive chain to better withstand the shock of snow plow service, a PTO cover and drive gear, and an extra bearing to support the thrust to the main shaft created by a PTO adapter."

231HD, 241D, & 241HD Transfer Cases

NV Gear Transfer Case Specifications
------NV231------NV231HD---NV241-------NV241D----NV241HD----NV271

Wt(lb)65----------72-----------80-----------100---------120----------NA

Input TQ730-------730---------1028---------1028------1400----------NA

Input TQ
(Max ft-lb)1,885---1,940------5,555---------5,555-----5,555--------7890

GVWR 5,920--------6,400------8,800--------10,500----11,000-------17,500
Fluid Cap(pt.2.5----2.5---------4.7-----------4.7--------6.5-----------4.0
***
It's interesting that even though the NV241HD has a wider chain and extra bearing and heavier case, the input Torque max rating is the same.
Note the NV271 in response to the 600 ft. lb. Cummins'
regards, as always, jefe

quicksilvr

Good info.