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When in low range, does the emergency brake shaft gear down too?

Yes. The large brake output shaft gear and the large rear axle output shaft gear are both permanently engaged with the same small gear on the idler gear in the middle of the transfer case. High and low ranges change the path of the power flow through the transfer case, but they do not disengage these three gears, so the brake output and rear axle output gears are always turning the same speed.

Are you considering a centered rear axle differential?

I am installing a 2014 5.7 hemi and overdrive auto trans, I need a spot to put a tone ring for the trans computer.

06boblee wrote:I am installing a 2014 5.7 hemi and overdrive auto trans, I need a spot to put a tone ring for the trans computer.

Nice.

Pics?

06boblee wrote:I am installing a 2014 5.7 hemi and overdrive auto trans, I need a spot to put a tone ring for the trans computer.

You should also think about rebuilding the t/case completely so it is up to the task, as well as adding an oil cooler if you want it to live long behind an overdrive transmission.

MSeriesRebuild wrote:

06boblee wrote:I am installing a 2014 5.7 hemi and overdrive auto trans, I need a spot to put a tone ring for the trans computer.

You should also think about rebuilding the t/case completely so it is up to the task, as well as adding an oil cooler if you want it to live long behind an overdrive transmission.

Charles, what would you recommend for gear oil in the transfer case? I am going to get into the case and replace the bearings & seals- and inspect everything else. Is there such a thing as a 205 with the same shaft layout as the 200?(offset rear driveshaft)

We use Amsoil 50 weight long-life transmission oil.

06boblee wrote:

MSeriesRebuild wrote:

06boblee wrote:I am installing a 2014 5.7 hemi and overdrive auto trans, I need a spot to put a tone ring for the trans computer.

You should also think about rebuilding the t/case completely so it is up to the task, as well as adding an oil cooler if you want it to live long behind an overdrive transmission.

Charles, what would you recommend for gear oil in the transfer case? I am going to get into the case and replace the bearings & seals- and inspect everything else. Is there such a thing as a 205 with the same shaft layout as the 200?(offset rear driveshaft)

As long as you're disassembling the transfer case to do the bearings and seals, replacing the shift rails with the stainless versions that Charles sells would be good, too. The exposed portion of the standard steel rails rusts, and when the rails are shifted, the corroded part tears the shift shaft seals, which in turn start leaking.

I briefly explored the idea of substituting a different transfer case, and the NP205 seemed like the first place to start looking. I didn't find a drop-side rear axle output, but my search wasn't exhaustive, either. But even if such a thing exists, it doesn't solve the real problem, which is sending the drive force through the idler gear in 2WD high. On the common versions of the NP205, in 2WD, the rear axle is driven directly from the input shaft, no force going through the gears (they're still turning inside the transfer case, but not propelling the truck). Less energy loss, and the transfer runs cooler. But now the rear axle output is at the centerline of the truck, and the rear axle is still offset. One change leads to another, and then another, and then...