Back in June, I photographed three Amtrak trains, westbound, not far east of Galesburg, over two days. All were in late afternoon.
One train ran both days, with the baggage car up front.
The other train ran only one day (I think), with the baggage car on the rear.
I lost my notes.
My theory is that the train with the forward baggage car is the CZ, because I think it was daily. So the rear-baggage-car one has to be the SW Chief, because I think it was thrice weekly.
Unfortunately, the COVID-based schedule may have reduced daily service to three times weekly; no printed timetables of that period seem to be available.
I figure that the baggage car placement is the same each day for a specific train. And I figure that the train that ran on consecutive days has to be the Zephyr.
That is what I would do, steeper grades on CZ route and according to Amtrak CZ has a professional bathroom cleaning crew…it’s an additional x number of employees to keep all the restrooms clean en route. I believe it is the only Western train that has that or at least the only one I read about. On other Western trains the car attendant is responsible for that. Not sure why CZ is different in that small respect.
My recollection is that the steepest grades on the Moffat and Sierras is about 2%, 2.4% in the Wasatch. On the SW Chief route there is 3.5% on Raton, 3% on Glorietta, and about 3% on Cajon (although those grades are generally shorter).
Those grades quoted are “averaged” somehow with the big kicker being how long some of those grades persist. Spent too many years having to prove to some nameless operating/mechanical official where and for how long the maximum grade was on Raton Pass was. ATSF hosted many a test train on the hill dealing with EMD (and to a lesser degree GE) trying to torture equipment on grades and relatively sharp curves. It was almost an “annual event” kind of thing. (and then there were the senseless string lining exercises at Wootton where the maximum curvature was … and the mechanical engineers who could not grasp how dynamic the track could be loaded vs. unloaded.) … And then the weeks spent on the hill with a rail profile gage to justify rail replacement instead of transposing tired/worn 132# rail.