Peterbilt 579

Hey. You are supposed to be brothers. Aren't you?
How can I send it to you?

 

Is the 2013 579 even out yet?

 

The production started in the last month and now can be ordered. The 680 is alrady in the dealerships.

 

We are family....a dysfunctional family!

You can either PM or email rmuck(AT)huntertrucksales.com and I'll run the specs and quote.

 

I am just modifying my spec, and hopefully in a couple of days I will have it and I will send it over.
Until, I have queston. I want to go crazy for the best possible fuel economy, and I am considering the Meritor Fuelite tandem (6x2). I know Dana have this configuration too, but for me it must be Meritor, because only they have the 2.5 ratio what I need for the direct drive transmission. Although every truck manufacturer have it as an option except Paccar. However according to a recent information from the Meritor district manager Peterbilt already has it. Can you confirm this for me please?

 

I will confirm the Meritor option as it does not yet appear in PROSPECTOR as an available setup.. The Dana S23-190 with tag is available with a 2.57 ratio that would require engineering approval by the powertrain engineers but should be doable.

What engine are you looking at and what rating?

 

Cummins ISX 15, 450hp, 1550/1750 torque. The 2.57 is still slow, and I found only 2.63

 

I will confirm the ratio choices. For your application the "SmartTorque" option from Cummins would work well, gives you extra 200 Lb/Ft torque without requiring transmission/driveline upgrades. Would help pull the grades with your tall gearing.

 

I will have high gear ratio, but I will have direct drive transmission, so my RPM at 60 will be 1280. By the way, I have just learned the Dana highest ratio is 2.53, which is good enough. But still I am not sure, I will go with the 6x2

 

Im picking up a new PB on Monday. A 389 with 500 Cummins. In addition, I was approved for a second truck.
I've been spec'ing a 579. Im thinking perhaps I should just purchase another 389 now.
It would certainly be interesting though to see what kind of mpg i would get from both trucks.
Right now, my 2007 Western Star has been getting 4.6 mpg. Last year, maintenace set me back just over $44,000. Thats why I thought I would try the PB. What I liked about my Western Star was the space between the seats, not close together like the 389.
I did not know the 579 was hard on the steers. I have some serious thinking to do.

Sara