Heavy spec mileage

Yep, I did 100,000 gross with a 260 hp and 9 speed, I also survived... Good old days...

But a 13-speed would have been nice...

I remember the crawl gear in high position filled up the whole between 3 and 4... Just a way to get the extra gear...

 

Yes but at the time $ was needed for other things than more GEARS. Anyhow not to sidetrack the OPs topic

is this the FREIGHTLINER your thinking about ?

http://www.truckpaper.com/listingsdetail/detail.aspx?OHID=3672385&

 

Lots of PETES like yours around my area , pulling chip trailers , flats and log trailers for forestry operators.

 

Tire size will play a role in the rear gear difference, too....and you didn't say anything about what size is on the pete, but with a 12K steer, 38K rears, and a 10 speed, I'm assuming it probably has LP22.5's. I'm also guessing a "heavy spec" truck with 14K steer axle and 46K rears will have tall 24.5's to handle the extra weight, and the 4.10's with tall 24.5's won't be all that much different than LP22.5's with 3.70's in regards to engine RPM's going down the road.

In other words, you'll likely be getting more power, more gears, and if there is any difference in RPM's going down the road, it won't be much.

 

...well then in that case, you'd see a difference in RPM @ speed.

 

It is not the brand of the car that counts it is what you have under the hood