Below is one of the emails I recieved from Brown-Lipe Bob. Good information.
Steve, the Dana/Spicer units being newer would mean that parts would be somewhat easier to find. As far as the older Brown-lipe units holding up under the higher speeds of today's trucks, I can't really say. I have not heard of any problems from people that I have talked with. One guy was making round trips from Oklahoma to Mexico hauling flowers and he had a lighter 30 series mounted in a **** Diesel and it held up okay. The only comment that I have heard from some people is that the gears whine at higher rpms.
The older Brownies have a flat top on the case which the Spicer unit does not have. The flat top allows the unit to mount higher up next to the body. The Brown-lipe units had the capability of mounting a Power tower on it. The power tower was a top mount PTO that could deliver the full input torque.
I don't have a lot of info on the Spicer units but will help if I can. Keep me posted. Robert.
