#2572
Southern Pacific class AC-7
🇺🇸 United States ·built by Baldwin Locomotive Works· from 1937· class of 26 American 4-8-8-2 cab forward locomotives
what is it?
Southern Pacific Railroad's AC-7 class of cab forward steam locomotives was the fourth class of the 4-8-8-2 locomotives purchased by Southern Pacific (SP). The locomotives were built by Baldwin Locomotive Works and shared many of the same characteristics of previous AC class locomotives. The AC-7s were only slightly larger than their AC-6 predecessors, but they included larger tenders and a beveled cab front in contrast to the earlier classes' flat cab front.
who runs it
base stats
Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.
fun facts
- First built 89 years ago, in 1937.
- Weighs about as much as 48 African elephants (~6 t each).
- Served for 21 years (1937–1958).
steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.
spec sheet
- built
- 1937
- in service from
- 1937
- retired
- 1958
- status
- retired
- number built
- 26
- kind
- Steam
- traction
- steam
- origin
- 🇺🇸 United States
- builders
- Baldwin Locomotive Works
- operators
- Southern Pacific Transportation Company
- top speed
- —
- power
- —
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- 4-8-8-2
- weight
- 290 t
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q7570300, Wikipedia: Southern Pacific class AC-7 (CC BY-SA 4.0).Updated 2026-10-25.