My NP541 with a working 5th was in a 550 GMC with a Neway drag axle that grossed 80,000+. I only used 1st when I was loaded. Empty I weighed about 20,000 with an aluminum and I always started in 2nd gear and only shifted the 2 speed in 4th and 5th. Of course, when I was loaded, I had to use every gear I had. I only used the clutch to untrack.
I have several 550 GMC. The only one I have with a NP541 with a working 5th is a wrecker.
https://picasaweb.google.com/112636930370126476644/DropBox02#6270596488369924722
