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Pennsylvania Railroad (PRR) Diesel Roster: All-Time List

Published: March 16, 2025

By: Adam Burns

The Pennsylvania Railroad was not immediately sold on diesels, continuing to stick with the proven steam locomotive well into the 1940s. The PRR was always slow to change and this stubbornness to change or adapt ultimately doomed the company when it merged with the New York Central

In their book, "Pennsylvania Railroad," authors Mike Schafer and Brian Solomon note the company's very first diesel was an Electro-Motive model SW switcher, #3908, which it acquired in June, 1937.

This 600 horsepower engine obviously didn't sell the railroad on diesel technology, and it even avoided purchasing EMD's first main line model, the FT. However, by the 1940s, specifically by 1947, the diesel's economies could not be ignored and the PRR began purchasing large batches from all of the major builders.

Photos

2853920935273760329039079038.jpgPennsylvania FA-2 #9628 at Enola, Pennsylvania, circa 1962. Fred Byerly photo. American-Rails.com collection.

Overview

Perhaps the railroad had a change of heart or simply wanted to try everything the market had to offer. Whatever the case, the PRR bought so many diesels it had an interesting, eclectic roster by the mid-1950s.

In some cases the railroad simply prchased models from builders with which it had had a longstanding relationship, such as Baldwin, although the Eddystone manufacturer's products are not generally considered on par with EMD's designs.

Interestingly, when General Electric later entered the market in 1960, PRR purchased its early U-boats and Penn Central continued buying GE products into the 1970s. The information presented here covers all of the PRR's known diesels, including original and later road numbers.

American Locomotive (Alco)

S1 

(PRR Class - AS6)

Model Original Road Number Second Road Number Serial Number Date Built
S1 5661-5668 - 77982-77983, 77992-77997 5/1950 - 6/1950
S1 5669-5670 - 77984-77985 5/1950
S1 9100-9103 - 76155, 76562-76564 2/1949 - 3/1949
S1 9237-9240 - 76565-76567, 76571 3/1949 - 4/1949
S1 9241-9246 - 76731-76736 3/1949 - 5/1949

S2

(PRR Class - AS10)

Model Original Road Number Second Road Number Serial Number Date Built
S2 5641-5643, 5646 - 77061-77063, 77491 3/1950
S2 5644-5645; 5647-5650 - 77489-77490; 77064, 77492-77494 3/1950 - 4/1950
S2 5651-5654 - 77065-77068 3/1950
S2 5655-5660 - 77444, 77447-77449, 77445-77446 3/1950 - 4/1950
S2 5926-5931 - 75916-75922 7/1948 - 8/1948, 4/1950
S2 9105-9109 - 76597-76601 2/1949
S2 9204 - 75915 7/1948
S2 9278-9287 - 76602-76611 3/1949 - 4/1949

S3

(PRR Class - AS6)

Model Original Road Number Second Road Number Serial Number Date Built
S3 8873-8874 - 78404, 78405 11/1950
S3 8875-8885 - 78506-78509, 78511-78517 11/1950 - 3/1951

S4

(PRR Class - AS10)

Model Original Road Number Second Road Number Serial Number Date Built
S4 8430-8432 - 80975-80977 1/1954
S4 8433, 8434 - 80295, 80296 1/1954, 2/1954
S4 8487-8499 - 79792-79804 5/1952 - 6/1952
S4 8886-8899 - 78683-78696 11/1950 - 12/1950
S4 8900-8901 - 78779, 78780 6/1951

T6

(PRR Class - AS10a)

Model Original Road Number Second Road Number Serial Number Date Built
T6 8424-8429 - 82857-82862 3/1958

RS1

(PRR Class - AS10am)

Model Original Road Number Second Road Number Serial Number Date Built
RS1 5619-5624 - 78106-78107, 78110-78113 6/1950 - 7/1950
RS1 5625-5628 - 78100-78103 6/1950
RS1 5629-5631 - 78114, 78116-78117 8/1950
RS1 5632-5636 - 78159-78163 8/1950
RS1 5637-5640 - 78104-78105, 78108-78109 6/1950

RS1

(PRR Class - AS10s)

Model Original Road Number Second Road Number Serial Number Date Built
RS1 5906 - 76214 12/1948

RS1

(PRR Class - AS10as)

Model Original Road Number Second Road Number Serial Number Date Built
RS1 8857-8858 - 78377, 79046 4/1951

RS1

(PRR Class - AS10ams)

Model Original Road Number Second Road Number Serial Number Date Built
RS1 8485, 8486 9914, 9915 79582-79583 5/1952

RS3

(PRR Class - AS16m)

Model Original Road Number Second Road Number Serial Number Date Built
RS3 8435-8442 5415-5416, 5437-5442 80572-80575, 80568-80571 11/1953 - 12/1953
RS3 8452-8455 5452-5455 79927-79930 6/1952
RS3 8456-8464 5456-5464 79907-79908, 79910-79913, 79915-79917 6/1952
RS3 8465-8470 5465-5470 79931-79936 6/1952
RS3 8471-8479 5571-5579 80114-80115, 79919-79920, 79922-79926 6/1952
RS3 8480-8484 5580-5584 79937-79941 6/1952
RS3 8590-8593 5450-5451, 5411, 5443 81711-81714 12/1955
RS3 8594-8603 5444-5449, 5400-5403 81795-81804 12/1955
RS3 8604, 8605 5404, 5405 81840, 81841 12/1955
RS3 8817-8836 - 79365-79384 11/1951

RS3

(PRR Class - AS16ms)

Model Original Road Number Second Road Number Serial Number Date Built
RS3 8443-8445 5567-5568 80576-80577, 80580 11/1953 - 12/1953
RS3 8837-8856 - 79395-79414 12/1951
RS3 8902-8904 - 78585, 78586, 78579 4/1951
RS3 8906-8908, 8914 - 78580-78582, 78584 4/1951 - 5/1951
RS3 8905, 8909-8913, 8915-8916 - 78587, 78583, 78588, 78590-78591, 78589, 78592-78593 4/1951 - 5/1951

RS11

(PRR Class - AS18m)

Model Original Road Number Second Road Number Serial Number Date Built
RS11 8617-8625 7617-7625 81920-81928 8/1956
RS11 8626-8635 7626-7635 82330-82339 2/1957 - 5/1957
RS11 8636-8641 7636-7641 82642-82647 11/1957
RS11 8642-8654 7642-7654 82817-82829 11/1957 - 12/1957

RSD5

(PRR Class - AS16am)

Model Original Road Number Second Road Number Serial Number Date Built
RSD5 8446-8451 6800-6805 80206-80211 10/1952 - 3/1953

RSD7

(PRR Class - APS24ms)

Model Original Road Number Second Road Number Serial Number Date Built
RSD7 8606-8610 6806-6810 81745-81749 12/1955

RSD12

(PRR Class - AS18am)

Model Original Road Number Second Road Number Serial Number Date Built
RSD12 8655-8663 6855-6863 82379-82387 12/1957 - 1/1958
RSD12 8664-8678 6864-6878 82066-82080 2/1958 - 3/1958
RDS12 8679 6879 82918 4/1958

RSD15

(PRR Class - AS24m)

Model Original Road Number Second Road Number Serial Number Date Built
RSD15 8611-8616 6811-6816 81750-81755 8/1956

FA-1

(PRR Class - AF15)

Model Original Road Number Second Road Number Serial Number Date Built
FA-1 9600A-9603A - 75987-75990 7/1948 - 8/1948
FA-1 9604A-9607A - 77010-77013 3/1950

FB-1

(PRR Class - AF15)

Model Original Road Number Second Road Number Serial Number Date Built
FB-1 9600B-9603B - 76038-76041 7/1948 - 8/1948
FB-1 9604B-9607B - 76893-76896 3/1950

FA-2

(PRR Class - AF16)

Model Original Road Number Second Road Number Serial Number Date Built
FA-2 9608A-9619A - 78640-78651 5/1951
FA-2 9620A-9631A - 79435-79446 11/1951-12/1951

FB-2

(PRR Class - AF16)

Model Original Road Number Second Road Number Serial Number Date Built
FB-2 9608B-9618B (Evens) - 78664-78669 5/1951
FB-2 9620B-9630B (Evens) - 79487-79491, 79747 11/1951 - 12/1951

PA-1/PB-1

(PRR Class - AP20)

(PRR Class - AFP20) ~ After 1952

Model Original Road Number Second Road Number Serial Number Date Built
PA-1 5750A-5754A - 74697-74701 10/1947 - 11/1947
PA-1 5755A-5759A - 75323-75327 11/1947 - 12/1947
PB-1 5750B-5758B (Evens) - 75343-75347 10/1947 - 12/1947

RS27

(PRR Class - AF24)

Model Original Road Number Second Road Number Serial Number Date Built
RS27 2400-2407 - 83607-83614 10/1962
RS27 2408-2414 - 84373-84379 10/1962

C424

(PRR Class - AF24a)

This single unit was rebuilt from RS27 demonstrator #640-1.

Model Original Road Number Second Road Number Serial Number Date Built
C424 2415 - 84558 9/1963

C424

(PRR Class - AF25)

Model Original Road Number Second Road Number Serial Number Date Built
C425 2416-2421 - 3394-1 thru 3394-6 10/1964 - 11/1964
C425 2422-2436 - 3403-1 thru 3403-15 2/1965 - 3/1965
C425 2437-2446 - 3433-1 thru 3433-10 12/1965

C628

(PRR Class - AF27)

Model Original Road Number Second Road Number Serial Number Date Built
C628 6300-6509 - 3401-01 thru 3401-10 3/1965
C628 6310-6314 - 3403-01 thru 3403-05 11/1965 - 12/1965

C630

(PRR Class - AF30a)

Model Original Road Number Second Road Number Serial Number Date Built
C630 6315-6329 - 3466-01 thru 3466-15 10/1966 - 12/1966

C636

(PRR Class - AF36) ~ Delivered in Penn Central colors.

Model Original Road Number Second Road Number Serial Number Date Built
C636 6330-6344 - 3499-01 thru 3499-15 3/1968 - 4/1968

Baldwin-Lima-Hamilton (BLH)

VO-660

(PRR Class - BS6)

Model Original Road Number Second Road Number Serial Number Date Built
VO660 5907-5909 - 64247, 64393, 64395 3/1942 - 9/1942
VO660 5932-5937 - 64401-64406 9/1942 - 10/1942
VO660 5941-5943 - 72821-72822, 78287 10/1945, 11/1945

VO-1000

(PRR Class - BS10)

Model Original Road Number Second Road Number Serial Number Date Built
VO-1000 5913-5918 - 69662-69666, 69784 9/1943 - 11/1943
VO-1000 5919-5920 - 71552, 71553 10/1945

DS-4-4-660

(PRR Class - BS6a)

Model Original Road Number Second Road Number Serial Number Date Built
DS-4-4-660 5957-5966 - 73618-73627 3/1948 - 5/1948
DS-4-4-660 9000-9008 - 73905-73913 3/1949 - 4/1949
DS-4-4-660 9009-9029 - 74236-74256 3/1949 - 5/1949
DS-4-4-660 9030-9049 - 74410-74429 5/1949
DS-4-4-660 9110-9121 - 73632-73642, 73803 7/1948 - 8/1948
DS-4-4-660 9210-9232 - 73805-73827 11/1948 - 2/1949
DS-4-4-660 9233-9236 - 73889-73892 2/1949

DS-4-4-750

(PRR Class - BS7/B27m)

Model Original Road Number Second Road Number Serial Number Date Built
DS-4-4-750 5595-5618 - 74720-74743 5/1950 - 6/1950

DS-4-4-1000

(PRR Class - BS10a)

Model Original Road Number Second Road Number Serial Number Date Built
DS-4-4-1000 5550-5552 - 74769, 74638-74639 3/1950, 2/1950
DS-4-4-1000 5553-5557 - 74641-74645 2/1950
DS-4-4-1000 5558-5565 - 74651-74658 2/1950 - 3/1950
DS-4-4-1000 5566-5570 - 74198-74202 1/1950
DS-4-4-1000 5571-5577 - 74621-74626, 74636 1/1950
DS-4-4-1000 5578-5584 - 74659-74665 4/1950
DS-4-4-1000 5585, 5586 - 74197, 74666 2/1950
DS-4-4-1000 5587-5590 - 74704-74707 2/1950
DS-4-4-1000 5968-5977 - 73586-73695 3/1948 - 4/1948
DS-4-4-1000 5978-5979* - 73603-73604 5/1948
DS-4-4-1000 9050-9072 - 74100-74122 3/1949 - 4/1949
DS-4-4-1000 9073-9079 - 74179-74185 4/1949
DS-4-4-1000 9122-9136 - 73616-73617, 73753-73765 6/1948 - 8/1948
DS-4-4-1000 9177-9183 - 73596-73602 4/1948 - 5/1948
DS-4-4-1000 9251-9257* - 73864-73870 12/1948 - 1/1949
DS-4-4-1000 9258-9261* - 73871-73874 1/1949
DS-4-4-1000 9262-9275* - 73875-73888 1/1949 - 2/1949
DS-4-4-1000 9429-9434* - 74708-74713 5/1950

* Listed as class BS10am.

DRS-4-4-1000

(PRR Class - BS10as)

Model Original Road Number Second Road Number Serial Number Date Built
DRS-4-4-1000 5591-5594 - 74744-74747 3/1950

DR-4-4-1500 (A)

(PRR Class - BF15)

Model Original Road Number Second Road Number Serial Number Date Built
DR-4-4-1500 (A) 9568A-9571A - 73697, 73700, 73701, 73703 2/1949
DR-4-4-1500 (A) 9572A-9575A - 73705, 73966, 73985, 74142 3/1949
DR-4-4-1500 (A) 9576A-9579A - 74143, 74146-74147, 74150 4/1949
DR-4-4-1500 (A) 9580A-9583A - 74151, 74154-74155, 74158 5/1949
DR-4-4-1500 (A) 9584A-9587A - 74159, 74162-74163, 74166 6/1949
DR-4-4-1500 (A) 9588A-9593A - 74167, 74170-74171, 74174-74175, 74178 6/1949 - 7/1949

DR-4-4-1500 (B)

(PRR Class - BF15)

Model Original Road Number Second Road Number Serial Number Date Built
DR-4-4-1500 (B) 9568B-9571B - 73698-73699, 73702, 73704 2/1949 - 3/1949
DR-4-4-1500 (B) 9572B-9575B - 73964-73965, 73986-73987 3/1949
DR-4-4-1500 (B) 9576B-9579B - 74144-74145, 74148-74149 4/1949
DR-4-4-1500 (B) 9580B-9583B - 74152-74153, 74156-74157 5/1949
DR-4-4-1500 (B) 9584B-9587B - 74160-74161, 74164-74165 5/1949 - 6/1949

DR-4-4-1500

(PRR Class - BF15a)

Model Original Road Number Second Road Number Serial Number Date Built
DR-4-4-1500 (A) 9700A-9703A - 74441-74442, 74444-74445 4/1950 - 5/1950
DR-4-4-1500 (A) 9704A-9707A - 74439, 74447, 74448, 74450 5/1950 - 6/1950
DR-4-4-1500 (B) 9700B-9703B - 74440, 74443, 74446, 74449 4/1950 - 5/1950
DR-4-4-1500 (B) 9704B-9707B - 74748-74751 5/1950 - 9/1950

DR-6-4-2000

(PRR Class - BP20)

Model Original Road Number Second Road Number Serial Number Date Built
DR-6-4-2000A 5770A-5779A - 73505-73514 6/1948 - 10/1948
DR-6-4-2000A 5780A-5784A - 73515-73519 10/1948 - 11/1948
DR-6-4-2000B 5770B-5778B (Evens) - 73523-73527 6/1948 - 10/1948
DR-6-4-2000B 5780B-5786B (Evens) - 73528-73531 10/1948 - 12/1948

DR-12-8-3000 ("Centipede")

(PRR Class -  BH50)

Model Original Road Number Second Road Number Serial Number Date Built
DR12-8-3000 5823A1, 5823A2 5823, 5822 73131A1, 73131A2 4/1947
DR12-8-3000 5824A1-5834A1 5824-5834 73377A1-73387A1 5/1947 - 2/1948
DR12-8-3000 5824A2-5827A2 5821, 5820, 5819, 5818 73377A2-73380A2 5/1947- 2/1948
DR12-8-3000 5828A2-5834A2 5811-5817 73381A2-73387A2 5/1947 - 2/1948

S8

(PRR Class - BS7)

Model Original Road Number Second Road Number Serial Number Date Built
S8 8994-8999 - 75117-75122 3/1951 - 4/1951

S12

(PRR Class - BS12)

Model Original Road Number Second Road Number Serial Number Date Built
S12 8100-8104 8135-8136, 8165, 8167, 8134 75945-75949 2/1954
S12 8753-8764 8155-8164 75619-75630 8/1952 - 9/1952
S12 8777-8796 - 75292-75311 12/1951 - 2/1952
S12 8976-8987 - 74857-74868 1/1951 - 2/1951
S12 8988-8993 - 74869-74874 3/1951

S12

(PRR Class - BS12m)

Model Original Road Number Second Road Number Serial Number Date Built
S12 8732-8752 8182-8199, 8180, 8179, 8178 75631-75651 9/1952 - 10/1952
S12 8765-8768, 8773-8775, 8769-8772 8179, 8176, 8177, 8168-8175 75652-75662 10/1952 - 12/1952

RS12

(PRR Class - BS12a)

Model Original Road Number Second Road Number Serial Number Date Built
RS12 8105-8109 - 75950-75954 2/1954

RS12

(PRR Class - BS12am)

Model Original Road Number Second Road Number Serial Number Date Built
RS12 8110 - 75955 2/1954
RS12 8776 8086 75663 9/1952

RS12

(PRR Class - BS12as)

Model Original Road Number Second Road Number Serial Number Date Built
RS12 8975 - 75116 4/1951

RT624

(PRR Class - BS24)

Model Original Road Number Second Road Number Serial Number Date Built
RT624 8952-8953 - 75123-75124 8/1951

RT624

(PRR Class - BS24m)

Model Original Road Number Second Road Number Serial Number Date Built
RT624 8113 8966 75958 2/1954
RT624 8724-8731 08724-08731 75664-75671 10/1952 - 12/1952
RT624 8954-8959 - 75125-75130 9/1951-10/1951
RT624 8960-8965 - 75131-75136 11/1951

AS616

(PRR Class - BS16m)

Model Original Road Number Second Road Number Serial Number Date Built
AS616 8111-8112 6975, 6976 75956-75957 2/1954

AS616

(PRR Class - BS16ms)

Model Original Road Number Second Road Number Serial Number Date Built
AS616 8966-8969 - 75076-75078, 75082 5/1951, 6/1951
AS616 8970-8971 - 75083-75084 6/1951
AS616 8972-8974 - 75079-75081 5/1951

RF16

(PRR Class - BF16)

Model Original Road Number Second Road Number Serial Number Date Built
RF16A 2000A-2009A - 75197-75206 6/1951 - 10/1951
RF16A 2010A-2017A - 75207-75214 2/1952 - 3/1952
RF16A 2018A-2019A - 75358-75359 3/1952
RF16A 2020A-2027A - 75378-75385 3/1952 - 4/1952
RF16B 2000B-2008B (Evens) - 75215-75219 6/1951 - 10/1951
RF16B 2010B-2016B (Evens) - 75220-75223 2/1952 - 3/1952
RF16B 2018B-2026B (Evens) - 75400, 75409-75412 3/1952 - 4/1952
RF16A 9708A-9715A - 74819-74826 12/1950 - 1/1951
RF16A 9716A-9727A - 74995-75006 3/1951
RF16A 9728A-9731A - 74991-74994 2/1951
RF16A 9732A-9735A - 74847-74848, 74855-74856 4/1951 - 5/1951
RF16A 9736A-9739A - 75112-75115 5/1951
RF16A 9740A-9743A - 74287-74830 2/1951
RF16A 9744A-9745A - 74989-74990 2/1951
RF16B 9708B-9714B (Evens) - 74831-74834 12/1950 - 1/1951
RF16B 9728B-9738B (Evens) - 74838-74840, 74844-74846 2/1951 - 5/1951
RF16B 9740B-9744B (Evens) - 74835-74837 2/1951

RF16

(PRR Class - BF18)

These three units were rebuilt with Alco 12-251 prime movers, rated at 1,800 horsepower.

Model Final Road Number Original Road Number Serial Number Date Built
RF16A 9632A, 9633A 9726A, 2001A 75220-75223 12/1959
RF16B 9632B 9583B 75220-75223 12/1959

Electro-Motive (EMD)

Early Switchers

PRR Classes

SW =  ES6

Model Original Road Number Second Road Number Serial Number Date Built
SW 3908 5911 680 6/1937

SW1

(PRR Class - ES6)

Model Original Road Number Second Road Number Serial Number Date Built
SW1 5910 - 1852 8/1942
SW1 5944-5946 - 3414-3416 6/1946
SW1 5947-5951 - 3580-3584 6/1946 - 7/1946
SW1 5952-5953 - 4957-4958 9/1947
SW1 5987-5999 - 5664-5676 3/1948 - 4/1948
SW1 9104 - 6763 4/1949
SW1 9138, 9137, 9339-9154 - 5370-5384 4/1948 - 7/1948
SW1 9200-9203 - 6759-6762 4/1949
SW1 9205-9209 - 6764-6768 4/1949
SW1 9396-9428 - 11190-11222 7/1950 - 11/1950

NW2

(PRR Class - ES10)

Model Original Road Number Second Road Number Serial Number Date Built
NW2 3909 5912 1426 10/1941
NW2 5921-5922 - 3417-3418 4/1946, 11/1945
NW2 5923-5925 - 4954-4956 9/1947 - 10/1947
NW2 9155-9164 - 5360-5369 2/1948
NW2 9165-9176 - 5802-5813 10/1948 - 11/1948
NW2 9247-9250 - 6755-6758 12/1948

SW7

(PRR Class - ES12)

Model Original Road Number Second Road Number Serial Number Date Built
SW7 8861-8867 - 13063-13069 1/1951

SW9

(PRR Class - ES12)

Model Original Road Number Second Road Number Serial Number Date Built
SW9 8859-8860 - 13061-13062 3/1951

SW7

(PRR Class - ES12m)

Model Original Road Number Second Road Number Serial Number Date Built
SW7 8868 - 13070 1/1951
SW7 8871-8872 - 13071-13072 1/1951
SW7 9358-9363 - 10431-10436 6/1950
SW7 9364-9368 - 10387-10391 5/1950
SW7 9369-9372 - 10437-10440 7/1950
SW7 9373-9385 - 10392-10404 3/1950
SW7 9386-9388 - 10405-10407 3/1950
SW7 9389-9395 - 10408-10414 5/1950

SW9

(PRR Class - ES12m)

Model Original Road Number Second Road Number Serial Number Date Built
SW9 8513-8522 9113-9122 (2nd) 16724-16733 12/1952
SW9 8523-8528 9123-9128 (2nd) 16742-16747 12/1952
SW9 8529-8536 9129-9136 (2nd) 16734-16741 3/1953
SW9 8537-8541 9137-9141 (2nd) 16748-16751 12/1952
SW9 8542-8544 9042-9044 (2nd) 16752-16754 3/1953
SW9 8869-8870 - 13073-13074 3/1951

SW1200

(PRR Class - ES12)

Model Original Road Number Second Road Number Serial Number Date Built
NW2 3909 5912 1426 10/1941
NW2 5923-5925 - 4954-4956 10/1947
SW1200 7900-7934 9000-9034 24132-24166 11/1957 - 4/1958

E7

(PRR Class - EP20)

Model Original Road Number Second Road Number Serial Number Date Built
E7A 5840A-5855A - 3976-3991 8/1947 - 9/1947
E7A 5856A-5865A - 5073-5082 2/1948
E7A 5866A-5879A - 7836-7849 3/1949 - 4/1949
E7A 5880A-5883A - 8619-8622 4/1949
E7B 5840B-5854B (Evens) - 3992-3999 8/1947 - 9/1947
E7B 5856B-5864B (Evens) - 5083-5087 2/1948
E7A 5900A, 5901A - 3356, 3357 9/1945
E7B 5900B - 5088 4/1947

E8

(PRR Class - EP22)

Model Original Road Number Second Road Number Serial Number Date Built
E8A 5765A-5769A, 5788A-5799A, 5801A-5807A - 15648-15671 3/1952 - 7/1952
E8A 5700A-5716A, 5760A-5764A - 16769-16790 9/1952 - 11/1952
E8A 5808A-5810A - 13101-13103 1/1951
E8A 5835A-5839A - 13104-13108 1/1951 - 2/1951
E8A 5884A-5893A - 10421-10430 3/1950 - 4/1950
E8A 5894A-5899A - 13109-13114 3/1951
E8A 5902A-5905A - 13115-13118 4/1951

F3A

(PRR Class - EF15/a)

Model Original Road Number Second Road Number Serial Number Date Built
F3A 9500A-9503A - 4914-4917 7/1947
F3A 9504A-9505A - 5389-5390 9/1947
F3A 9506A-9517A - 5043-5054 4/1948 - 5/1948
F3A 9518A-9519A - 6496-6497 1/1948
F3A 9520A-9527A, 9540A-9541A - 5346-5355 5/1948 - 7/1948
F3A 9528A - 5358 7/1948
F3A 9529A-9539A, 9556A-9565A - 5577-5596 9/1948
F3A 9542A-9555A - 6467-6480 10/1948 - 1/1949
F3A 9566A-9567A - 5748-5749 9/1948
F3A 9677A-9678A - 8279-8280 9/1948
F3A 9679A - 6488 10/1948
F3A 9680A-9683A - 6489-6492 1/1949 - 2/1949
F3A 9684A-9689A - 7574-7579 2/1949

F3B

(PRR Class - EF15/a)

Model Original Road Number Second Road Number Serial Number Date Built
F3B 9500B-9505B - 4918-4923 7/1947 - 9/1947
F3B 9506B-9517B - 5055-5066 4/1948 - 5/1948
F3B 9518B-9519B - 6498, 6493 1/1948, 1/1949
F3B 9520B-9522B - 5356-5357, 5359 5/1948, 7/1948
F3B 9523B-9527B, 9540B - 5067-5072 7/1948
F3B 9528B - 6494 2/1949
F3B 9541B - 7590 2/1949
F3B 9542B-9554B (Evens) - 6481-6487 10/1948 - 1/1949
F3B 9543B, 9545B - 7591, 7592 2/1949

F7A

(PRR Class - EF15/a)

Model Original Road Number Second Road Number Serial Number Date Built
F7A 9648A-9651A, 9662A-9663A, 9666A - 9826-9832 2/1950
F7A 9652A-9655A - 8800-8803 2/1950
F7A 9656A-9661A - 8791-8796 3/1950
F7A 9667A-9676A - 8227-8236 3/1939 - 7/1949
F7A 9640A-9647A, 9664A-9665A - 8767-8776 2/1950 - 3/1950
F7A 9670A-9676A - 8230-8236 4/1949 - 6/1949
F7A 9690A-9699A - 7580-7589 4/1949
F7A 9764A-9831A - 13578-13645 1/1951
F7A 9872A-9879A - 16791-16798 9/1952

F7B

(PRR Class - EF15/a)

Model Original Road Number Second Road Number Serial Number Date Built
F7B 9547B-9555B (Odds) - 7593-7597 4/1949
F7B 9667B-9676B - 8237-8246 3/1949 - 7/1949
F7B 9640B-9647B - 8777-8784 3/1950
F7B 9656B, 9658B, 9660B - 8797-8799 3/1950
F7B 9652B, 9654B - 8804-8805 2/1950
F7B 9648B, 9650B - 9833-9834 2/1950
F7B 9670B-9676B - 8240-8246 6/1949
F7B 9764B-9818B (Evens) - 13646-13673 1/1951 - 4/1951
F7B 9832B-9858B (Evens) 4150-4163 13075-13088 4/1952 - 6/1952
F7B 9872B-9878B (Evens) 3560-3563 16799-16802 9/1952

FP7

(PRR Class - EFP15)

Model Original Road Number Second Road Number Serial Number Date Built
FP7 9832A-9866A 4332-4366 12410-12444 4/1952 - 8/1952
FP7 9867A-9871A 4367-4371 15643-15647 8/1952

GP7

(PRR Class - ES15ms)

Model Original Road Number Second Road Number Serial Number Date Built
GP7 8500-01 5900-012 16756-16757 8/1952
GP7 8551-8553 5852-5853 18666-18668 9/1953
GP7 8583-8587 5955-5859 18628-18632 8/1953 - 9/1953

GP7

(PRR Class - ES15m)

Model Original Road Number Second Road Number Serial Number Date Built
GP7 8500-8501 5900-5901 16756-16757 8/1952
GP7 8502 5902 16768 8/1952
GP7 8503-8507 5903-5907 16758-16762 8/1952
GP7 8508-8512 5908-5912 16763-16767 8/1952
GP7 8545-8546 5845-5846 18626-18627 8/1953
GP7 8547-8550 5847-5851 18662-18668 9/1953
GP7 8551-8552 5851-5852 18666-18667 9/1953
GP7 8553 5853 18668 9/1953
GP7 8554-8582 5854-5882 18633-18661 8/1953 - 9/1953
GP7 8583-8587 5883-5887 18628-18632 8/1953 - 9/1953
GP7 8797-8799 5897-5899 12395-12397 1/1952
GP7 8800-8801 5840-5841 12398-12399 1/1952
GP7 8802-8804 5842-5844 (2nd) 12400-12402 1/1952
GP7 8805-8806 5895-5896 (2nd) 12403-12404 1/1952

GP9

(PRR Class - EFS17m)

Model Original Road Number Second Road Number Serial Number Date Built
GP9 7000-7049 - 20704-20753 10/1955 - 12/1955
GP9 7050-7099 - 21855-21904 10/1956 - 11/1956
GP9 7100-7104 - 22596-22600 11/1956
GP9 7105-7144 - 23305-2334 5/1957 - 6/1957
GP9 7145-7159 - 23943-23957 11/1957
GP9 7160-7184 - 23958-23982 11/1957
GP9 7185-7229 - 24217-24261 11/1957 - 12/1957
GP9 7230-7269 - 24282-24321 10/1959 - 12/1959

GP9B

(PRR Class - EFS17m)

Model Original Road Number Second Road Number Serial Number Date Built
GP9B 7158B-7184B - 23997-24006 11/1957
GP9B 7185B-7204B - 24262-24281 11/1957 - 12/1957
GP9B 7230B-7239B - 24322-24331 10/1959 - 12/1959

SD7

(PRR Class - ES15ax)

Model Original Road Number Second Road Number Serial Number Date Built
SD7 8588-8589 6950-6951 18669-18670 10/1953

SD9

(PRR Class - ES17m)

Model Original Road Number Second Road Number Serial Number Date Built
SD9 7600-7624 6900-6924 24167-24191 11/1957 - 1/1958

GP30

(PRR Class - EF22)

Model Original Road Number Second Road Number Serial Number Date Built
GP30 2200-2251 - 28108-28159 2/1963 - 5/1963

GP35

(PRR Class - EF25)

Model Original Road Number Second Road Number Serial Number Date Built
GP35 2252-2275 - 29001-29024 5/1964 - 6/1964
GP35 2276-2296 - 29447-29467 6/1964
GP35 2297-2308 - 29605-29616 11/1964
GP35 2309-2310 2250-2251 29617-29618 11/1964
GP35 2311-2370 2252-2310 30328-30387 1/1965 - 4/1965

SD35

(PRR Class - EF25a)

Model Original Road Number Second Road Number Serial Number Date Built
SD35 6000-6039 - 30388-30427 2/1965 - 5/1965

SD40

(PRR Class - EF30a)

Model Original Road Number Second Road Number Serial Number Date Built
SD40 6040-6104 - 31285-31349 2/1966 - 3/1966

SD45

(PRR Class - EF36)

Model Original Road Number Second Road Number Serial Number Date Built
SD45 6105-6139 - 32315-32349 10/1966 - 12/1966
SD45 6140-6169 - 32365-32394 1/1967 - 2/1967
SD45 6170-6199, 6210-6234 - 33804-33858 12/1967 - 1/1968
SD45 6200-6208 (Evens) - 33859-33863 1/1968
SD45 6201-6209 (Odds) - 33864-33868 1/1968 - 3/1968

Fairbanks-Morse (FM)

H10-44

(PRR Class -  FS10)

Model Original Road Number Second Road Number Serial Number Date Built
H10-44 5980-5986 - 10L61-10L63, 10L66-10L69 6/1948
H10-44 9080-9099 - 10L150-10L169 7/1949 - 11/1949
H10-44 9184-9196 - 10L70-10782 6/1948 - 9/1948
H10-44 9197-9199 - 10L96-10L98 9/1948 - 10/1948
H10-44 9288-9299 - 10L120-10L131 3/1949 - 4/1949

H12-44

(PRR Class -  FS12)

Model Original Road Number Second Road Number Serial Number Date Built
H12-44 8708-8710 8340-8342 12L828-12L830 2/1954

H12-44

(PRR Class -  FS12m)

Model Original Road Number Second Road Number Serial Number Date Built
H12-44 8711-8723 8327-8339 12L637-12L649 11/1952

H16-44

(PRR Class -  FS16m)

Model Original Road Number Second Road Number Serial Number Date Built
H16-44 8807-8816 5151 (8808), 5154 (8811), 5156 (8813), 5158 (8815) 16L579-17L588 4/1952

H20-44

(PRR Class -  FS20m)

Model Original Road Number Second Road Number Serial Number Date Built
H20-44 8917-8942 - 21L453-21L478 4/1951 - 6/1951
H20-44 9300-9304 - 20L42-20L46 1/1949 - 2/1949
H20-44 9305-9309 - 20L37-20L41 12/1948
H20-44 9310 - 20L47 2/1949
H20-44 9311 - 20L48 3/1949

H24-66 "Train Master"

(PRR Class -  FS24m)

Model Original Road Number Second Road Number Serial Number Date Built
H24-66 "Train Master" 8699-8707 6708, 6700-6707 24L897-24L905 8/1956 - 9/1956

CFA16-4

(PRR Class - FF16)

Model Original Road Number Second Road Number Serial Number Date Built
CFA16-4 9448A-9455A - 16L339-61L346 9/1950 - 10/1950
CFA16-4 9492A-9499A - 16L347-16L354 10/1950 - 11/1950

CFB16-4

(PRR Class - FF16)

Model Original Road Number Second Road Number Serial Number Date Built
CFB16-4 9448B-9454B (Evens) - 16L355-16L358 9/1950 - 10/1950
CFB16-4 9492B-9498B (Evens) - 16L359-16L362 10/1950 - 11/1950

Erie-Built (A)

(PRR Class - FF20)

Model Original Road Number Second Road Number Serial Number Date Built
Erie-Built (A) 9456A-9459A - L1108, L1110-L1111, L1113 11/1947 - 12/1947
Erie-Built (A) 9460A-9465A - L1114, L1116, L1121-L1122, L1123-L1124 1/1948- 2/1948
Erie-Built (A) 9466A-9471A - L1130-L1135 2/1948 - 3/1948
Erie-Built (A) 9478A-9491A - L1152-L1156, L1161-L1169 9/1948 - 12/1948

Erie-Built (A)

(PRR Class - FP20a)

Model Original Road Number Second Road Number Serial Number Date Built
Erie-Built (A) 9472A-9477A - L1140-L1141, L1148-L1151 6/1948 - 7/1948

Erie-Built (B)

(PRR Class - FF20)

Model Original Road Number Second Road Number Serial Number Date Built
Erie-Built (B) 9456B-9464B (Evens) - L1103, L1106, L1109, L1112, L1115 11/1947 - 12/1947
Erie-Built (B) 9466B-9470B (Evens) - L1125, L1126, L1129 12/1947

Erie-Built (B)

(PRR Class - FP20)

Model Original Road Number Second Road Number Serial Number Date Built
Erie-Built (B) 9478B - L1158 9/1948

Erie-Built (B)

(PRR Class - FP20a)

Model Original Road Number Second Road Number Serial Number Date Built
Erie-Built (B) 9472B-9476B (Evens) - L1146-L1147, L1144 6/1948 - 7/1948

General Electric (GE)

44-Ton (Switcher)

(PRR Class - GS4/m)

Model Original Road Number Second Road Number Serial Number Date Built
44-Ton 9312-9313 - 29992-29993 3/1949
44-Ton 9314-9324 - 30132-30142 3/1949 - 5/1949
44-Ton 9325-9340 - 29077-29079, 29961-29973 6/1948 - 9/1948
44-Ton 9341-9349 - 29975-29983 10/1948 - 12/1948
44-Ton 9350-9357 - 30143-30146, 30243-30245, 30254 5/1949 - 8/1949, 2/1950

U25B

(PRR Class - GF25)

Model Original Road Number Second Road Number Serial Number Date Built
U25B 2500-2506 - 34528-34534 8/1962
U25B 2507-2528 - 34539-34560 9/1962 - 10/1962
U25B 2529-2533 - 35124-35128 9/1964
U25B 2534-2548 - 35530-35544 2/1965 - 3/1965
U25B 2649-2658 - 35773-35782 11/1965 - 12/1965

U25C

(PRR Class - GF25a)

Model Original Road Number Second Road Number Serial Number Date Built
U25C 6500-6503 - 35057-35059, 35056 4/1965
U25C 6504-6509 - 35050-35055 4/1965
U25C 6510-6519 - 35619-35628 11/1965 - 12/1965

U28C

(PRR Class - GF28a)

Model Original Road Number Second Road Number Serial Number Date Built
U28C 6520-6525 - 36019-36024 9/1966
U28C 6526-6528 - 36026-36027, 36025 9/1966
U28C 6529-6534 - 36028-36033 9/1966

U30C

(PRR Class - GF30a)

Model Original Road Number Second Road Number Serial Number Date Built
U30C 6535-6539 - 36096-36100 1/1967

Lima-Hamilton

Lima never listed any of their diesel models with official names, although railfans over the years have colloquially given them various titles. 

PRR Classes

Transfer Switcher = LS25

Model Original Road Number Second Road Number Serial Number Date Built
Transfer Switcher (2,500 Horsepower) 5671-5681 - 9402-9412 5/1950 - 7/1950
Transfer Switcher (2,500 Horsepower) 5682-5683 - 9537-9538 8/1951, 9/1951

Transfer Switcher

(PRR Class - LS25m)

Model Original Road Number Second Road Number Serial Number Date Built
Transfer Switcher (2,500 Horsepower) 8943-8949 - 9528-9532, 9535-9536 5/1951 - 8/1951
Transfer Switcher (2,500 Horsepower) 8950-8951 - 9533, 9534 7/1951 - 8/1951

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