Published: October 12, 2026
By: Adam Burns
The Nashville, Chattanooga & St. Louis dieselized from the yard outward, and it did the job in a dozen years. Alco and Baldwin switchers arrived in 1941. EMD F3s took the Nashville–Atlanta freight in 1948 and 1949. Thirty-seven GP7s and a fleet of F7s finished the main line. On January 4, 1953, Consolidation No. 406 made the last steam run. The Louisville & Nashville merger of August 30, 1957, put Dixie Line numbers onto L&N boards: switchers from 2101, GP7s from 1700, and the cab units from 1800 and 1900.
The quantity column on this page totals 132 locomotives. Each machine is one row, or one row with the sisters of the same builder order. Later NC&StL numbers, and the L&N numbers that followed the merger, are in the notes.
The L&N's "Georgian" is running over the NC&StL departing Atlanta, Georgia in 1956. Howard Robbins photo.
On this page: At a glance · Yards, then the main line · Switchers · GP7s · Cab units
| Item | Detail |
|---|---|
| Railroad | Nashville, Chattanooga & St. Louis. Mark NCSTL. Company page: Nashville, Chattanooga & St. Louis |
| This roster | All-time diesel fleet. The quantity column totals 132 locomotives |
| Switchers | 43. Alco S1 and S2, Baldwin VO-660 and VO-1000, EMD SW1, NW2, SW7, and SW9, and four GE 44-tonners |
| Road switchers | 37 GP7s, numbers 700–731 and 750–754, built 1950–1952 |
| Cab units | 52. Nine F3A, twelve F3B, twenty-three F7A, and eight F7B |
| First diesels | 1941. S1s 1 and 2, VO-660 No. 10, VO-1000 No. 15, SW1 No. 20, and NW2 No. 25 |
| After the merger | L&N numbers from August 30, 1957. Switchers 2101–2169, GP7s 1700–1731 and 1750–1754, cab units 1800–1831 and 1900–1919, 44-tonners 3100–3103 |
Information compiled October 12, 2026.
The first diesels were yard engines. Alco S1s 1 and 2 came in July 1941. Baldwin VO-660 No. 10 and VO-1000 No. 15 came that October. EMD SW1 No. 20 and NW2 No. 25 came in December, serials 1537 and 1538, one construction number apart. Those two EMD switchers were soon renumbered 15 and 19, which is why an early roster can look as if an SW1 and a Baldwin shared the number 15. They did, in sequence. The Baldwin had already moved on to 35.
Five more Baldwin VO-1000s, serials 69644–69648, arrived in August 1943 and took 30–34. Alco S2s filled 5–9 in 1942 and, after the first No. 10 had become a Baldwin memory, 10 and 11 in 1945 and 1946. Four EMD NW2s, 20–23, came in October 1949. Ten SW7s came in the summer of 1950, and five SW9s in February 1951. Four GE 44-tonners, 100–103, arrived in June and July 1950 and later ran as L&N 3100–3103.
Road freight began with the F3s. Nine F3As, 800–808, and twelve F3Bs, 900–911, were delivered from March 1948 into January 1949, one serial block, 5772–5792, split between cabs and boosters. Twenty-three F7As and eight F7Bs followed through March 1951. The F3B, F7A, and F7B units were delivered with steam generators. F7s ran through on the St. Louis–Atlanta Georgian with L&N E7s. The GP7s, 37 engines in 700–731 and 750–754, arrived from January 1950 to September 1952 and took over the work the 4-8-4s had held. On the Nashville–Atlanta line the new power nearly doubled the tonnage a steam crew had been allowed.
Several of the cab units and one GP7 outlived the Dixie Line on neighboring railroads. F7A 814, serial 5798, became L&N 1814 and then Clinchfield 821. F7A 822, serial 11953, became L&N 1822 and then Clinchfield 822. F7B 918, serial 11957, became L&N 1918 and then Clinchfield 869. GP7 753, serial 11982, became L&N 1753 and then Clinchfield 919. Those four are on the Clinchfield diesel roster. GP7 710, serial 10551, became L&N 478, then Amtrak 772, and is at the Tennessee Valley Railroad Museum.
| Model | Numbers | Qty | Serial | Order | Built | Notes |
|---|---|---|---|---|---|---|
| S1 | 1–2 | 2 | 69470, 69478 | July 1941 | Alco. Later L&N 2101–2102, then 30–31. No. 30 became 2376 | |
| S1 | 3–4 | 2 | 74362, 74432 | April 1946 | Later L&N 2103–2104, then 32–33 | |
| S2 | 5–9 | 5 | 69944–69948 | June–August 1942 | Later L&N 2105–2109, then 2305–2309 | |
| S2 | 10 (2nd), 11 | 2 | 74338, 74459 | November 1945 and January 1946 | Later L&N 2110–2111, then 2310–2311. The first No. 10 was the VO-660 | |
| VO-660 | 10 | 1 | 64197 | October 1941 | Baldwin. Renumbered 40, repowered with an EMD 567, renumbered 69, later L&N 2169 | |
| VO-1000 | 15 | 1 | 64210 | October 1941 | Later 35 and 55, then L&N 2155. Repowered with an EMD 567 | |
| VO-1000 | 30–31 | 2 | 69644, 69645 | August 1943 | Later 50 and 51, then L&N 2150 and 2151. No. 2150 went to the Naval Ammunition Depot at Crane | |
| VO-1000 | 32–34 | 3 | 69646–69648 | August 1943 | Later 52–54 and 60–62, then L&N 2160–2162. EMD-repowered. Nos. 2160 and 2161 went to Clean Coal Terminal as 1001 and 1000 | |
| SW1 | 20 | 1 | 1537 | December 1941 | EMD. Renumbered 15. Later L&N 2115, then 11 (2nd) | |
| NW2 | 25 | 1 | 1538 | December 1941 | Renumbered 19. Later L&N 2119, then 2210 | |
| NW2 | 20–23 | 4 | 7429–7432 | October 1949 | Later L&N 2120–2123, then 2211–2214 | |
| SW7 | 24–29 | 6 | 7433–7438 | July 1950 | Later L&N 2124–2129, then 2224–2229 | |
| SW7 | 30–33 | 4 | 11924–11927 | August 1950 | 31–33 were second occupants of those numbers, after the Baldwins moved. Later L&N 2130–2133, then 2230–2233 | |
| SW9 | 34–38 | 5 | 11233–11237 | February 1951 | Later L&N 2134–2138, then 2234–2238 | |
| 44-ton | 100–103 | 4 | 30460–30463 | June–July 1950 | GE. Later L&N 3100–3103 |
| Model | Numbers | Qty | Serial | Order | Built | Notes |
|---|---|---|---|---|---|---|
| GP7 | 700–704 | 5 | 7439–7443 | January 1950 | Later L&N 1700–1704, then 490–494. Nos. 491 and 492 became 2241 and 2242. No. 493 went to Amtrak 781 | |
| GP7 | 705 | 1 | 10546 | February 1950 | Later L&N 1705, then 495 | |
| GP7 | 706–715 | 10 | 10547–10556 | September 1950 | Later L&N 1706–1715, then 474–483. No. 710, later L&N 478, went to Amtrak 772 and is at the Tennessee Valley Railroad Museum | |
| GP7 | 716–718 | 3 | 11962–11964 | September 1950 | Later L&N 1716–1718, then 484–486 | |
| GP7 | 719–723 | 5 | 11238–11242 | February 1951 | Later L&N 1719–1723, then 456–460 | |
| GP7 | 724–728 | 5 | 11243–11247 | March 1951 | Later L&N 1724–1728, then 461–465 | |
| GP7 | 729–731 | 3 | 17367–17369 | August–September 1952 | Later L&N 1729–1731, then 470–472 | |
| GP7 | 750–752 | 3 | 11959–11961 | September 1950 | Later L&N 1750–1752, then 487–489 | |
| GP7 | 753 | 1 | 11982 | August 1950 | Later L&N 1753, then Clinchfield 919 | |
| GP7 | 754 | 1 | 15321 | November 1951 | Later L&N 1754, then 466 and 2354 |
| Model | Numbers | Qty | Serial | Order | Built | Notes |
|---|---|---|---|---|---|---|
| F3A | 800–803 | 4 | 5772–5775 | March, July, and December 1948 | Later L&N 1800–1803 | |
| F3A | 804–808 | 5 | 5786–5790 | January 1949 | Later L&N 1804–1808 | |
| F3B | 900–909 | 10 | 5776–5785 | March, July, August, and December 1948 | Steam-generator equipped. Later L&N 1900–1909. No. 907 was rebuilt as L&N F7B 702 | |
| F3B | 910–911 | 2 | 5791, 5792 | January 1949 | Steam-generator equipped. Later L&N 1910–1911 | |
| F7A | 809–815 | 7 | 5793–5799 | April 1949 | Steam-generator equipped. Later L&N 1809–1815. No. 814, serial 5798, became Clinchfield 821 | |
| F7A | 816–820 | 5 | 9877–9881 | June 1950 | Steam-generator equipped. Later L&N 1816–1820 | |
| F7A | 821–825 | 5 | 11952–11956 | June 1950 | Steam-generator equipped. Later L&N 1821–1825. No. 822, serial 11953, became Clinchfield 822 | |
| F7A | 826–831 | 6 | 13861–13866 | March 1951 | Steam-generator equipped. Later L&N 1826–1831, then 858–863 | |
| F7B | 912–913 | 2 | 5800, 5801 | April 1949 | Steam-generator equipped. Later L&N 1912–1913, then 700 and 701, then 724 and 725 | |
| F7B | 914–917 | 4 | 9882–9885 | June 1950 | Steam-generator equipped. Later L&N 1914–1917. No. 916 was traded to EMD | |
| F7B | 918–919 | 2 | 11957, 11958 | June 1950 | Steam-generator equipped. Later L&N 1918 and 1919. No. 918 became Clinchfield 869. No. 919 became L&N 723 |
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