We are getting several new Peterbilt tri axle dumps. One of the guys said some are the "big rig" flat nosed model and the rest are a sloped nosed model. What are the differences, can anyone shed any light here?
Depends on which model. The classic "big rig" I am guessing they are talking about the 389. There are several other models with the sloped hood, 567, 367/365, and a few more. I think the 567 can be spec'd with the full sized engines like the 15L ISX and the 367/365 are limited to the smaller engines like the 12L ISX and the 13L Paccar.