Canadian Pacific Railway rebuilt their GP7 fleet in the early 1980's as GP7u units for yard service, including a chopped short hood, new numberboards and front cab windows, and upgrading the 567B prime movers with 645 power assemblies and to "BC" engine block specs (some upgraded with 567C engine blocks out of retired F-units).

Nov 8, 2013 · These units sported the unofficial designation of GP7u and GP9u by railfans - the “u” indicating “upgraded”. Hundreds served all over the vast Santa Fe system in a variety of roles. Model features: All-new tooling Three versions: Phase I GP7u: 86” tall engine compartment doors Phase II GP7u: 86” + 82” tall engine compartment doors

I do still not fully understand what Topeka did on the cab at the conversion of ATSF GP7 to GP7u in Cleburne. All sources say the physical work has been done on Cleburne only. Cleburne did also invent and design the angled cab for the CF7 years earlier.

This unit also has the "Topeka" cab and has had the dynamic brakes removed and the heat exchange area is plated over in this view at Oklahoma City, OK in Feb. 1975. Here is another rebuilt GP7 with the same modifications as the one just before it.

Most units were rebuilt to GP7u by the Santa Fe shops between 1972 and 1981. All rebuilt units received the blue & yellow "warbonnet" livery along with chopped short hoods for improved visibility. The early rebuilds retained the round cab roof; later ones received the angled "Topeka" cabs with rooftop air conditioners.

Based upon later rebuilds with angled cabs and revised number board housings, these represent what to many are the "quintessential" GP7u and GP9u Topeka Cab rebuilds.

Jun 7, 2009 · As an active Santa Fe modeler, I did my own version of the GP7u several years ago using an Atlas base and building a new cab. Working off of drawings through the Santa Fe Modelers, my cab looks identical to the one in MR.

filter hatch in the mid-seventies. While the chopped nose and “Topeka Cab” are the most • Four exhaust stacks noticeable, any other modifications were made. Upgraded trucks, new electrical • 36” radiator fans with blades visible inside equipment, air conditioning, four-stack exhaust manifold and removal of the • Ratchet brake dynamic brake (if .

ion gears for smooth and quiet programs. The units recieved brand-new cabs (referred to as operation “Topeka Cabs” because the work was performed at ATSF’s Topeka • All-wheel electrical pick.

end up being rebuilt into “GP7u’s” with fully rebuilt cabs, electrical components, and prime movers. The B units received cabs in the process. Since Santa Fe was known for changing out spark arrestors, we included them in a poly bag for the …