I have a flat nose front engine Blue Bird. It has the 1160 CAT diesel (precursor to the 320
. The tag on my dashboard says 6.8 rear end. I think that the rear end may have been changed before I bought it, because I drove it pedal to the metal on my trip from Nashville to Springfield Mo. and the bus went 67 MPH.
I think there must be a governor on the motor. I use a GPS to tell me the speed. On my trip from Nashville I got 8 MPG. My bus weighs 22,000 lbs.
Recently I went on a 130 mile trip, and it was weird that I was able to go 69 to 72 MPH on that trip. I figure that I am still getting 8 MPG.
I do not have a tachometer.
Can anyone tell me why I can go so fast without blowing up the motor? If indeed the rear end is 6.8, I would think that the governed motor would not let the bus go that fast.