GM Alternator
I know this from having a gauge on my tcase filled with Eaton synthetic lube:
at 240 degrees the lube loses its ability to carry away heat and rapidly increases in temp unless the vehicle is stopped...though this heats it up for a period of time since it loses ram air and motion.
Running between 50 and 60 MPH for an hour or more on the highway on a hot day will heat my tcase to these temps. Running at the 50 mph point, and letting the truck slow down on hills will pretty much keep mine at 230 or below. Anything more than that will overheat the fluid and the temps will "runaway"...when this happened on the highway, the temp went from 240 to 280 in about 1/4 mile and when shut off soon thereafter, the temp exceeded the gauges 320 limit for quite some time before it dropped down.
My tcase had the gauge installed at the time when I moved the rear driveshaft to the straight through onfig but since I didnt know about the VPW kit at the time, I just ditched the ebrake altogether...so I have less parts there than you...
I do not have any numbers from before I moved the shaft to through drive.
brute4c
Lord send your Holy Ghost into our hearts and make the desire of our hearts Your Will.
Pro-choice, that's a LIE, babies don't choose to die!!