The EMD F40PH is a four-axle 3,000–3,200 hp (2.2–2.4 MW) B-B diesel-electric locomotive built by General Motors Electro-Motive Division in several variants from 1975 to 1992.

Built around EMD’s venerable 16-cylinder 645E3 power plant, the F40PH was rated at 3000 HP, but they featured a unique control system to allow them to provide head-end power. The F40’s alternator for the HEP was driven directly off the prime mover, and in order to supply power at the correct 480V and 60Hz, it had to run at exactly 896 RPM.

Feb 26, 2025 · Electro-Motive's F40PH series became the face of Amtrak for more than two decades. The model was originally designed to operate in commuter and short haul service. However, the SDP40F's failure prompted Amtrak to look elsewhere for a long-haul road locomotive. In response, EMD redesigned the F40PH.

The EMD F40PH is a four-axle 3,000–3,200 hp (2.2–2.4 MW) B-B diesel-electric locomotive built by General Motors Electro-Motive Division in several variants from 1975 to 1992.

The General Motors Electro-Motive Division F40PH series is a 4-axle lightweight diesel-electric locomotive originally designed for service with Amtrak. Built from 1975 to the early 2000's, it was essentially a GP40-2 with a full-width body on the shorter GP35 frame, although over time the design, both in appearance and mechanically, evolved ...

New Commuter-version F40PH locomotives and Amtrak Phase III ditch light versions have retooled bodies with over-cab A/C units and illuminated ditch lights. Chicago Metra version F40PH locomotives have directional head and tail lights on the front of …

Feb 1, 2023 · Amtrak F40PH locomotives are considered the standard passenger motive power for the 1980s and early 1990s. The four-axle, 3,000-hp units are mechanically identical to the much more common GP40-2 freight locomotive, which also use the 16-645E prime mover. In fact, the F40PH was EMD’s first production passenger locomotive to use this prime mover.

The EMD F40PH represents a significant piece of Railroad history, The F40PH was was hailed as “the locomotive that saved Amtrak and tells the story of American passenger railroading in the last few decades.

Mar 16, 2020 · •NAMES: F40PH, F40PHR, F40PH-2, F40PH-2M, F40PH-2C, F40PHM-2C; nicknames, Winnebago, Screamer, Thunder Box, Thunder Wagon. •QUANTITY: 486. •HORSEPOWER: 3,000. •KNOWN FOR: Mainstay of Amtrak’s …

Jun 3, 2021 · F40PH 134 wears the livery of today’s Metra, while its two sisters still are outfitted in their original RTA colors. Photograph by Gary Dolzall. The versatile EMD F40PH became the diesel locomotive of choice among many U.S. commuter operators in …