Last revised: September 22, 2026
By: Adam Burns
The GG1 is the electric the Pennsylvania Railroad built for the wires between New York and Washington, and for the extension of those wires to Harrisburg. One hundred thirty-nine of them, numbered 4800 through 4938, came out of Erie and Altoona between August 1934 and June 1943. A center cab, a welded shell, Brunswick green, and five gold stripes made the class the face of the railroad under catenary. They took the Broadway Limited and the General, the Congressionals and the Senator, and the through trains of other railroads that reached Pennsylvania Station: the Champion, the Silver Meteor, and the Crescent.
The class outlasted the company that ordered it. Penn Central began on February 1, 1968. Amtrak bought its own GG1s in 1971. Conrail used them in freight until electric freight ended in 1980. The last revenue train was New Jersey Transit 4879 on train 3323, out of New York’s Pennsylvania Station at 5:20 p.m. on October 28, 1983, as far as South Amboy. The next day the three engines still able to run made the farewell trips. Sixteen survive.
Pennsylvania GG1 4877 at South Amboy, New Jersey, in New Jersey Transit service, June 13, 1981. Tony Organek photo. American-Rails.com collection.
On this page: Specifications · Two prototypes · What GG means · Motors and the quill · Loewy’s shell · To South Amboy · Roster · The sixteen
| Item | Detail |
|---|---|
| Class | GG1. On the Pennsylvania, G was a 4-6-0. GG is two of them, back to back. The 1 is the first design of that arrangement |
| Wheel arrangement | AAR 2-C+C-2. A two-axle truck, three driving axles, an articulation, three driving axles, and a two-axle truck. As a wheel count, 4-6-0+0-6-4 |
| Quantity | 139. Pennsylvania 4800–4938, with no gaps in the series. August 1934 through June 1943 |
| Builders | 4800: Baldwin frames, running gear, and riveted body; General Electric electrical equipment, installed at Erie. 4801–4814: General Electric, Erie. 4815–4938: Juniata Shops at Altoona, 124 locomotives, electrical equipment by General Electric or Westinghouse |
| Length | 79 ft 6 in over coupler faces |
| Width | 10 ft 4 in |
| Height | 15 ft 0 in over locked-down pantographs |
| Drivers | 57 in. Six driving axles |
| Truck wheels | 36 in. Four truck axles |
| Wheelbase | Rigid wheelbase 13 ft 8 in on each power unit. Overall wheelbase 69 ft 0 in |
| Weight | 4800: 475,000 lb. 4801–4857: 460,000 lb. 4858–4868 and 4889–4938: 477,000 lb. 4869–4888: 468,400 lb. Adhesive weight about 300,000 to 303,000 lb on the six driving axles |
| Line current | 11,000 volts, 25 Hz AC, collected by one of two pantographs |
| Transformer | About 4,800 kVA, about 30,300 lb. Electro-pneumatic tap changer |
| Traction motors | 12 single-phase AC commutator motors, two per driving axle, 385 hp each. Continuous total 4,620 hp. GEA-627-A1 on the General Electric engines; the Westinghouse equivalent on the Westinghouse engines. Quill drive |
| Short-period output | About 8,000 hp at 90 mph, and about 9,500 hp at 49 mph. Class tables also carry a 10,000 hp drawbar figure for those peaks |
| Gearing and pull | 24:77 for passenger service, 100 mph, 65,500 lb starting tractive effort. 22:79 for freight service, 90 mph, 72,800 lb starting tractive effort |
| Acceleration | Published figure for the 24:77 gearing: stand to 100 mph in 65 seconds |
| Train heat | One oil-fired steam generator, 4,500 lb of steam per hour. Water about 2,760 gallons (about 2,245 on 4800). Fuel oil 424 gallons |
| Auxiliaries | Two blowers, 55 hp each. Air compressor, 150 cubic feet per minute at 100 rpm |
| Early Altoona engines | 4815–4857, 43 locomotives, in the 460,000 lb lot. Held to 90 mph at first, with the higher starting pull, and built without dynamic brakes |
| First cost | The first production engines are cited at about $250,000 each |
The passenger motor already on the property was the P5, a 2-C-2. Three driving axles sat in one rigid frame, with a pair of traction motors on each axle. The torque was hard on those axles, the engine was rough at speed, and the boxcab put the crew in the nose. The modified P5a moved the cab in from the end, and the class went to freight. The railroad still wanted a passenger electric that would hold 100 mph between New York and Washington and ride well enough to do it every day.
It ordered two prototypes in 1934. Baldwin and Westinghouse built a 2-D-2, class R1, and numbered it 4800: four driving axles in a rigid frame, eight motors, about 5,000 horsepower, geared for 100 mph. General Electric built a 2-C+C-2, class GG1, and numbered it 4899. Baldwin made the frames, the running gear, and a riveted body. The partly finished locomotive went to Erie, where General Electric installed the electrical equipment. The running gear followed a New Haven electric of the same axle arrangement: two sets of three driving axles, each set in its own frame, so the locomotive could bend.
Both were center-cab engines, and both went to the test track in August 1934. The GG1 tracked better. The Pennsylvania chose it. In November 1934 the two prototypes swapped numbers, so the engine the railroad had chosen would lead its class as 4800. The R1 became 4899. In 1940 it was renumbered 4999, clearing 4899 for another GG1, and it stayed in passenger service, including a turn on the Broadway Limited, until it was scrapped in the 1950s. Old Rivets, the name that stuck to 4800, is the riveted prototype. Every GG1 after it was welded.
The first production order was 57 engines, 4801–4857, delivered through 1935. General Electric at Erie built 4801–4814. Juniata, the locomotive shop at Altoona, assembled 4815–4857 and, after a pause, the rest of the class through 4938 in June 1943. Electrical equipment on the Altoona engines came from General Electric or from Westinghouse, and the roster column records which. The wires into Washington were finished on February 10, 1935, and 4800 took part in the inaugural electric run between Union Station and Pennsylvania Station. Passenger electrics reached Harrisburg on January 15, 1938.
Pennsylvania GG1 4834 at Hillside, New Jersey, September 21, 1941, waiting for a Lehigh Valley steam train to come up. Richard Kindig photo. American-Rails.com collection.
On the Pennsylvania, steam classes walked the alphabet as the engines grew. G was the 4-6-0. A GG1 is two of those arrangements set back to back, and the numeral means it was the first design. In the Association of American Railroads system the wheel arrangement is a 2-C+C-2. Counted as wheels, each half is a 4-6-0 and the two halves face opposite directions, so the whole locomotive is a 4-6-0+0-6-4. The two frames meet at an articulation. A curve that punished the R1’s rigid driving wheelbase was ordinary track for a GG1.
The cab sits in the middle of the carbody, so the crew sat clear of either nose. The engine ran in either direction with no wye and no turntable. One pantograph was up. The other was the spare.
Twelve motors, two on each of the six driving axles, did the work. Each is a single-phase alternating-current commutator motor, rated 385 horsepower, so the continuous rating is 4,620 horsepower. On the General Electric engines the motor is the GEA-627-A1. The Westinghouse engines carry that company’s equivalent. The motors drive a hollow quill that surrounds the axle. A bull gear turns the quill, and spring cups on the quill engage the wheels, so the axle can rise and fall in the boxes while the gear mesh stays put. The motors remain in the frame. That is how a pair of motors per axle, the arrangement that hurt the P5, could live under a GG1 for fifty years.
Power comes off the 11,000-volt, 25-cycle catenary. A transformer of about 4,800 kilovolt-amperes steps the line down, and an electro-pneumatic tap changer sets what the motors see. Passenger gearing, 24 teeth into 77, is the 100 mph combination, with 65,500 pounds of starting tractive effort. Freight gearing, 22 into 79, is held to 90 mph and starts 72,800 pounds. The published acceleration for the passenger gear is a stand to 100 mph in 65 seconds. For a short period the class is credited with about 8,000 horsepower at 90 mph and about 9,500 horsepower at 49 mph, and the specification tables also carry a 10,000-horsepower drawbar figure for those peaks.
Robert Le Massena set those numbers beside the other American 2-C+C-2s of the early 1930s. The Cleveland Union Terminal machine he described weighed 419,000 pounds, was rated 2,640 horsepower continuous, and was held to 70 mph. The New Haven machine weighed 404,000 pounds, was rated 3,440 horsepower, and was held under 70. The later GG1s, about 477,000 pounds and 4,620 horsepower continuous, were built to live at 100.
Weight follows the lot. The prototype scales 475,000 pounds. Engines 4801–4857 scale 460,000. Engines 4858–4868 and 4889–4938 scale 477,000. Engines 4869–4888 scale 468,400. About 300,000 to 303,000 pounds of that rests on the six driving axles. The early Altoona engines, 4815–4857, were the lighter group: 90 mph at first, the higher starting pull, and no dynamic brakes.
An oil-fired steam generator heated the train, 4,500 pounds of steam an hour, from a tank of about 2,760 gallons of water and 424 gallons of oil. The prototype’s water tank was the smaller one, about 2,245 gallons. Two 55-horsepower blowers cooled the electrical gear. The first production engines are cited at about $250,000 each. The finished locomotive is 79 feet 6 inches over the coupler faces, 10 feet 4 inches wide, and 15 feet even with the pantographs locked down.
The prototype’s body was a riveted box. The railroad hired Raymond Loewy, already at work on the Broadway Limited, to give the production engines a shell that matched the job. He had the body welded, contoured the hoods, and drew five gold pinstripes the length of the green carbody, the cat whiskers. Brunswick green, those five stripes, and Futura lettering were the 1935 dress. On 4800 the stripes were spaced a little wider than on the engines that followed, until it was repainted to the standard.
In 1952 the railroad painted 4908 through 4913 Tuscan red, five stripes, for the new Budd Congressionals and the Senator. The next year 4856, 4857, 4876, and 4929 received the same Tuscan. From 1952, Dulux took the place of gold leaf as engines went through the shop. In 1955 the standard became Brunswick green with one wide stripe and a large keystone. Five engines sat out that change for a time. Numbers 4907 and 4916 wore Tuscan with the wide stripe. Numbers 4866, 4872, and 4880 went out in silver with a broad red band, a large keystone, and 18-inch lettering. All five later came back to Brunswick green. Freight engines in the later years commonly wore the single stripe.
A snowstorm in February 1958 drove fine snow through the intake filters. On about forty engines the original side louvers were plated over and new vents were cut into the hoods below the pantographs. The engines that kept the old louvers still read as a 1935 GG1 along the hood. Number 4935 was one of them.
Pennsylvania GG1 4877 in Tuscan red at South Amboy, New Jersey, June 27, 1981. New Jersey Transit had repainted it that May. Don Wood photo. American-Rails.com collection.
For twenty years a GG1 on a Pennsylvania passenger train was the ordinary picture between New York, Philadelphia, Washington, and, from January 15, 1938, Harrisburg. Freight work grew in the 1950s as the passenger assignments thinned. By the early 1960s a large share of the class was on freights, often in pairs, while the passenger engines were still timed at 100 mph with what varnish remained.
The first retirements came in March 1966: 4804, 4831, and 4847. Most of the class was still intact when the Pennsylvania became Penn Central on February 1, 1968, and the black dip with the mating-worms mark went onto the carbodies. One engine stepped out of that black for a day with a date on it. In 1969, GG1 4902 was painted light blue and brought the Golden Spike Centennial Limited from Baltimore into New York on May 19. After the New Haven entered Penn Central on January 1, 1969, GG1s ran north of New York to New Haven by way of the Hell Gate Bridge route.
A pair of former Pennsylvania GG1s with a freight near Morrisville, Pennsylvania, August 24, 1968, the first summer of Penn Central. Photographer unknown. American-Rails.com collection.
Penn Central GG1 4896 with train 135 at Glen Burnie, Maryland, on the Northeast Corridor, September 1969. Rick Burn photo. American-Rails.com collection.
Amtrak’s 1971 purchase was thirty locomotives, at about $50,000 each. They became 900 through 929, and later a 4 was set in front of the three-digit number. The digits follow that purchase. Pennsylvania 4916 became Amtrak 915 and then 4915. Pennsylvania 4918 became 916 and then 4916. The full cross-reference sits in the roster below, ahead of a note on the 1973 Penn Central renumbering that put 4904 out as 4930.
Amtrak GG1 901 with trains 174 and 142 at Trenton, New Jersey, January 28, 1977. The 901 is Pennsylvania 4897. Marty Bernard photo. American-Rails.com collection.
In November 1976, Howard Serig argued in Trains that an operating GG1 should wear Pennsylvania colors again. Friends of the GG1 raised the money. The goal was $10,000, met within two months, and the gifts eventually came to $18,343.88. Raymond Loewy agreed to serve as honorary chairman. Amtrak chose 4935: sound enough to restore, still carrying its original number, and still fitted with the original louvered intakes. It entered the Wilmington shops on March 25, 1977. The cosmetic bill was $8,712, paid by check number 4935 on May 7. Amtrak took the mechanical work. On May 15, 1977, the engine was dedicated at Washington Union Station and then took the Murray Hill to New York in Brunswick green and five gold stripes.
Amtrak GG1 4935 with Metroliner 121 at Seabrook, Maryland, June 29, 1978, in the Brunswick green and five gold stripes applied the spring before. Marty Bernard photo. American-Rails.com collection.
Amtrak GG1 901 at Trenton the same morning, January 28, 1977, with trains 174 and 142. Marty Bernard photo. American-Rails.com collection.
A pair of Amtrak GG1s at Seabrook, Maryland, June 29, 1978, one in black and one in faded red, silver, and blue, on a short train of inherited cars. Marty Bernard photo. American-Rails.com collection.
Conrail, from April 1, 1976, kept a fleet of GG1s in electric freight until that service ended in 1980. In the summer of 1976 it put the prototype, 4800, in a red, white, and blue Bicentennial scheme and sent it out on an Amtrak special.
Conrail GG1 4800, “Old Rivets,” in Bicentennial paint with an Amtrak special at Leaman Place, Pennsylvania, in the summer of 1976. The Strasburg Railroad interchanges here. Jerry Custer photo. American-Rails.com collection.
Penn Central GG1s, led by 4825, work freight service past the station at Capital Beltway, Maryland on July 17, 1970. Roger Puta photo.
Amtrak’s replacement for the class took two tries. General Electric’s E60 arrived first, and the Federal Railroad Administration held it below the speed a GG1 had kept for decades. The AEM-7, Electro-Motive’s locomotive from the Swedish Rc4, entered revenue service on May 9, 1980, when 901 left Washington Union Station with Metroliner 108. Amtrak retired its last GG1s on May 1, 1981.
The engines still running belonged to New Jersey Transit. On July 1, 1980, Conrail sold 4872 through 4884, thirteen locomotives, for the North Jersey Coast Line, the former New York & Long Branch, between New York and South Amboy. Six were placed in service. Three operated: 4877, 4879, and 4882. In May 1981 New Jersey Transit repainted 4877 Tuscan red with pinstripes. The Jersey Central Chapter of the National Railway Historical Society paid for it, following the 4935 restoration. The South Amboy photographs on this page are that engine.
Pennsylvania GG1 4877 on a fan trip along NJ Transit at South Amboy, New Jersey, July 11, 1981. Don Wood photo. American-Rails.com collection.
Pennsylvania GG1 4880 at South Amboy, New Jersey, about 1968–1970. American-Rails.com collection.
On the evening of October 28, 1983, engine 4879 left Pennsylvania Station at 5:20 p.m. with train 3323. It ran to South Amboy, and the power was changed there. That was the last GG1 in revenue service. The next day, October 29, the three engines made three round trips between Matawan and Newark. At the end of the day, 4882 pulled 4877 and 4879 back into the yard. It was the last of the class to move under its own power. The GG1 had been in service since 1934.
One hundred thirty-nine locomotives, 4800 through 4938, and the numbers do not skip. The builder column follows the construction: General Electric at Erie for 4800–4814, with Baldwin on the prototype, and Altoona after that, with Westinghouse or General Electric electrical equipment as the cell states. A blank means the engine did not carry that owner’s number. Retirement months are the roster as compiled for this page.
Read the Amtrak column from left to right. The thirty engines bought in 1971 became 900–929, and later took a 4 in front of those three digits. The digits follow the purchase, so 4916’s Amtrak numbers are 915 and then 4915. In 1973 Penn Central reused the numbers of GG1s already gone. The original 4930 had been retired in October 1968. Penn Central then assigned 4930–4934 to 4904, 4905, 4909, 4915, and 4917, and 4936–4939 to 4921, 4922, 4923, and 4927. Engine 4935 kept 4935, which is why the restoration committee could repaint an engine that still wore its Pennsylvania number. Ten more engines, taken as Conrail began, kept the Penn Central number. Engine 4890’s cell includes the assigned number 930.
Conrail sold 4872–4884 to New Jersey Transit on July 1, 1980. Of the thirteen, six were placed in service and three operated: 4877, 4879, and 4882. Their retirement date in the table is October 1983.
| PRR | Penn Central | Conrail | Amtrak | Builder | Built | Disposition |
|---|---|---|---|---|---|---|
| 4800 | 4800 | 4800 | — | GE/Baldwin | 8/1934 | Retired 1/1980, Preserved |
| 4801 | 4801 | 4801 | — | GE | 5/1935 | Retired 4/1979, Scrapped |
| 4802 | 4802 | 4802 | — | GE | 5/1935 | Retired 3/1979, Scrapped |
| 4803 | 4803 | 4803 | — | GE | 6/1935 | Retired 2/1979, Scrapped |
| 4804 | — | — | — | GE | 6/1935 | Retired 3/1966, Scrapped |
| 4805 | — | — | — | GE | 6/1935 | Retired 1/1968, Scrapped |
| 4806 | 4806 | 4806 | — | GE | 6/1935 | Retired 5/1979, Scrapped |
| 4807 | — | — | — | GE | 6/1935 | Retired 3/1967, Scrapped |
| 4808 | 4808 | 4808 | — | GE | 7/1935 | Retired 5/1979, Scrapped |
| 4809 | 4809 | 4809 | — | GE | 7/1935 | Retired 2/1980, Scrapped |
| 4810 | 4810 | — | — | GE | 7/1935 | Retired 7/1969, Scrapped |
| 4811 | 4811 | 4811 | — | GE | 7/1935 | Retired 3/1979, Scrapped |
| 4812 | — | — | — | GE | 7/1935 | Retired 10/1966, Scrapped |
| 4813 | — | — | — | GE | 7/1935 | Retired 3/1967, Scrapped |
| 4814 | — | — | — | GE | 8/1935 | Retired 3/1967, Scrapped |
| 4815 | 4815 | 4815 | — | Baldwin/PRR/Westinghouse | 4/1935 | Retired 2/1979, Scrapped |
| 4816 | 4816 | — | — | Baldwin/PRR/Westinghouse | 5/1935 | Retired 4/1968, Scrapped |
| 4817 | — | — | — | Baldwin/PRR/GE | 5/1935 | Retired 3/1967, Scrapped |
| 4818 | 4818 | — | — | Baldwin/PRR/GE | 5/1935 | Retired 3/1970, Scrapped |
| 4819 | — | — | — | Baldwin/PRR/Westinghouse | 5/1935 | Retired 3/1967, Scrapped |
| 4820 | — | — | — | Baldwin/PRR/Westinghouse | 5/1935 | Retired 1/1968, Scrapped |
| 4821 | 4821 | 4821 | — | Baldwin/PRR/Westinghouse | 5/1935 | Retired 2/1979, Scrapped |
| 4822 | 4822 | 4822 | — | Baldwin/PRR/GE | 6/1935 | Retired 7/1979, Scrapped |
| 4823 | — | — | — | Baldwin/PRR/Westinghouse | 6/1935 | Retired 2/1967, Scrapped |
| 4824 | 4824 | 4824 | — | Baldwin/PRR/Westinghouse | 6/1935 | Retired 5/1979, Scrapped |
| 4825 | 4825 | 4825 | — | Baldwin/PRR/Westinghouse | 6/1935 | Retired 2/1979, Scrapped |
| 4826 | 4826 | — | — | Baldwin/PRR/Westinghouse | 6/1935 | Retired 4/1969, Scrapped |
| 4827 | 4827 | — | — | Baldwin/PRR/Westinghouse | 6/1935 | Retired 7/1969, Scrapped |
| 4828 | 4828 | — | — | Baldwin/PRR/Westinghouse | 6/1935 | Retired 7/1969, Scrapped |
| 4829 | — | — | — | Baldwin/PRR/Westinghouse | 6/1935 | Retired 4/1967, Scrapped |
| 4830 | — | — | — | Baldwin/PRR/Westinghouse | 6/1935 | Retired 2/1967, Scrapped |
| 4831 | — | — | — | Baldwin/PRR/Westinghouse | 6/1935 | Retired 3/1966, Scrapped |
| 4832 | 4832 | — | — | Baldwin/PRR/Westinghouse | 6/1935 | Retired 3/1970, Scrapped |
| 4833 | — | — | — | Baldwin/PRR/Westinghouse | 6/1935 | Retired 10/1966, Scrapped |
| 4834 | — | — | — | Baldwin/PRR/Westinghouse | 7/1935 | Retired 11/1967, Scrapped |
| 4835 | 4835 | 4835 | — | Baldwin/PRR/Westinghouse | 7/1935 | Retired 2/1980, Scrapped |
| 4836 | 4836 | 4836 | — | Baldwin/PRR/Westinghouse | 7/1935 | Retired 5/1979, Scrapped |
| 4837 | 4837 | — | — | Baldwin/PRR/Westinghouse | 7/1935 | Retired 4/1968, Scrapped |
| 4838 | 4838 | 4838 | — | Baldwin/PRR/Westinghouse | 7/1935 | Retired 2/1979, Scrapped |
| 4839 | — | — | — | Baldwin/PRR/Westinghouse | 7/1935 | Retired 12/1968, Scrapped |
| 4840 | 4840 | 4840 | — | PRR/Westinghouse | 4/1935 | Retired 2/1980, Scrapped |
| 4841 | 4841 | 4841 | — | PRR/Westinghouse | 4/1935 | Retired 5/1979, Scrapped |
| 4842 | — | — | — | PRR/Westinghouse | 4/1935 | Retired 4/1969, Scrapped |
| 4843 | — | — | — | PRR/Westinghouse | 5/1935 | Retired 4/1967, Scrapped |
| 4844 | 4844 | 4844 | — | PRR/Westinghouse | 5/1935 | Retired 2/1979, Scrapped |
| 4845 | 4845 | — | — | PRR/Westinghouse | 5/1935 | Retired 8/1975, Scrapped |
| 4846 | — | — | — | PRR/Westinghouse | 5/1935 | Retired 3/1967, Scrapped |
| 4847 | — | — | — | PRR/Westinghouse | 5/1935 | Retired 3/1966, Scrapped |
| 4848 | 4848 | 4848 | — | PRR/Westinghouse | 5/1935 | Retired 12/1977, Scrapped |
| 4849 | 4849 | 4849 | — | PRR/GE | 5/1935 | Retired 5/1979, Scrapped |
| 4850 | 4850 | 4850 | — | PRR/Westinghouse | 5/1935 | Retired 2/1980, Scrapped |
| 4851 | 4851 | 4851 | — | PRR/Westinghouse | 6/1935 | Retired 2/1979, Scrapped |
| 4852 | 4852 | 4852 | — | PRR/Westinghouse | 6/1935 | Retired 2/1980, Scrapped |
| 4853 | 4853 | 4853 | — | PRR/Westinghouse | 6/1935 | Retired 5/1979, Scrapped |
| 4854 | 4854 | 4854 | — | PRR/Westinghouse | 6/1935 | Retired 2/1979, Scrapped |
| 4855 | 4855 | 4855 | — | PRR/GE | 6/1935 | Retired 4/1979, Scrapped |
| 4856 | 4856 | 4856 | — | PRR/GE | 6/1935 | Retired 2/1980, Scrapped |
| 4857 | 4857 | 4857 | — | PRR/Westinghouse | 6/1935 | Retired 2/1979, Scrapped |
| 4858 | 4858 | 4858 | — | PRR/GE | 10/1937 | Retired 2/1979, Scrapped |
| 4859 | 4859 | 4859 | — | PRR/GE | 12/1937 | Retired 2/1980, Preserved |
| 4860 | 4860 | 4860 | — | PRR/GE | 12/1937 | Retired 5/1979, Scrapped |
| 4861 | 4861 | 4861 | — | PRR/GE | 12/1937 | Retired 2/1979, Scrapped |
| 4862 | 4862 | 4862 | — | PRR/GE | 12/1937 | Retired 2/1979, Scrapped |
| 4863 | 4863 | 4863 | — | PRR/Westinghouse | 1/1938 | Retired 12/1977, Scrapped |
| 4864 | 4864 | 4864 | — | PRR/Westinghouse | 1/1938 | Retired 2/1980, Scrapped |
| 4865 | 4865 | 4865 | — | PRR/Westinghouse | 1/1938 | Retired 2/1980, Scrapped |
| 4866 | 4866 | — | — | PRR/Westinghouse | 1/1938 | Retired 8/1975, Scrapped |
| 4867 | 4867 | 4867 | — | PRR/Westinghouse | 1/1938 | Retired 2/1980, Scrapped |
| 4868 | 4868 | 4868 | — | PRR/Westinghouse | 2/1938 | Retired 2/1979, Scrapped |
| 4869 | 4869 | 4869 | — | PRR/Westinghouse | 12/1938 | Retired 2/1980, Scrapped |
| 4870 | 4870 | 4870 | — | PRR/Westinghouse | 12/1938 | Retired 2/1979, Scrapped |
| 4871 | — | — | — | PRR/GE | 12/1938 | Retired 8/1967, Scrapped |
| 4872 | 4872 | 4872 | — | PRR/Westinghouse | 1/1939 | Retired 10/1983, Scrapped |
| 4873 | 4873 | 4873 | — | PRR/GE | 1/1939 | Retired 10/1983, Scrapped |
| 4874 | 4874 | 4874 | — | PRR/Westinghouse | 1/1939 | Retired 10/1983, Scrapped |
| 4875 | 4875 | 4875 | — | PRR/GE | 1/1939 | Retired 10/1983, Scrapped |
| 4876 | 4876 | 4876 | — | PRR/Westinghouse | 1/1939 | Retired 10/1983, Preserved |
| 4877 | 4877 | 4877 | — | PRR/Westinghouse | 1/1939 | Retired 10/1983, Preserved |
| 4878 | 4878 | 4878 | — | PRR/GE | 2/1939 | Retired 10/1983, Scrapped |
| 4879 | 4879 | 4879 | — | PRR/Westinghouse | 2/1939 | Retired 10/1983, Preserved |
| 4880 | 4880 | 4880 | — | PRR/GE | 2/1939 | Retired 10/1983, Scrapped |
| 4881 | 4881 | 4881 | — | PRR/GE | 2/1939 | Retired 10/1983, Scrapped |
| 4882 | 4882 | 4882 | — | PRR/GE | 2/1939 | Retired 10/1983, Preserved |
| 4883 | 4883 | 4883 | — | PRR/Westinghouse | 3/1939 | Retired 10/1983, Scrapped |
| 4884 | 4884 | 4884 | — | PRR/GE | 3/1939 | Retired 10/1983, Scrapped |
| 4885 | 4885 | 4885 | — | PRR/Westinghouse | 3/1939 | Retired 2/1980, Scrapped |
| 4886 | 4886 | 4886 | — | PRR/GE | 3/1939 | Retired 2/1980, Scrapped |
| 4887 | 4887 | 4887 | — | PRR/GE | 4/1939 | Retired 2/1980, Scrapped |
| 4888 | — | — | — | PRR/Westinghouse | 4/1939 | Retired 8/1967, Scrapped |
| 4889 | 4889 | 4889 | — | PRR/Westinghouse | 3/1940 | Retired 2/1980, Scrapped |
| 4890 | 4890 | — | 4890, 930 | PRR/GE | 3/1940 | Retired 1980, Preserved |
| 4891 | 4891 | 4891 | — | PRR/Westinghouse | 4/1940 | Retired 12/1979, Scrapped |
| 4892 | 4892 | — | 4892, 900, 4900 | PRR/GE | 3/1940 | Wrecked 1980 (?), Scrapped |
| 4893 | 4893 | — | 4893 | PRR/Westinghouse | 4/1940 | Transformer Fire 1979, Scrapped |
| 4894 | 4894 | 4894 | — | PRR/GE | 4/1940 | Retired 2/1980, Scrapped |
| 4895 | 4895 | — | 4895 | PRR/Westinghouse | 4/1940 | Retired 1981, Scrapped |
| 4896 | 4896 | — | 4896 | PRR/GE | 4/1940 | Retired 1981, Scrapped |
| 4897 | 4897 | — | 4897, 901, 4901 | PRR/Westinghouse | 4/1940 | Retired 1981, Scrapped |
| 4898 | 4898 | 4898 | — | PRR/GE | 5/1940 | Retired 12/1979, Scrapped |
| 4899 | 4899 | — | 4899, 902, 4902 | PRR/Westinghouse | 5/1940 | Retired 1981, Scrapped |
| 4900 | 4900 | — | 4900, 903, 4903 | PRR/GE | 5/1940 | Retired 1980, Scrapped |
| 4901 | 4901 | — | 4901, 904, 4904 | PRR/Westinghouse | 5/1940 | Retired 1981, Scrapped |
| 4902 | 4902 | — | 4902, 905, 4905 | PRR/GE | 5/1940 | Retired 1981, Scrapped |
| 4903 | 4903 | — | 4903, 906, 4906 | PRR/Westinghouse | 6/1940 | Retired 1981, Preserved |
| 4904 | 4930 | — | 4930 | PRR/GE | 6/1940 | Retired 1981, Scrapped |
| 4905 | 4931 | — | 4931 | PRR/Westinghouse | 8/1940 | Retired 1/1979, Scrapped |
| 4906 | 4906 | — | 4906, 907, 4907 | PRR/GE | 6/1940 | Retired 6/1978, Scrapped |
| 4907 | 4907 | — | 4907, 908, 4908 | PRR/Westinghouse | 8/1940 | Retired 1981, Scrapped |
| 4908 | 4908 | — | 4908, 909, 4909 | PRR/GE | 7/1940 | Retired 1981, Scrapped |
| 4909 | 4932 | — | 4932 | PRR/GE | 12/1941 | Retired 1981, Preserved |
| 4910 | 4910 | — | 4910, 910, 4910 | PRR/GE | 12/1941 | Retired 1981, Scrapped |
| 4911 | 4911 | — | 4911, 911, 4911 | PRR/GE | 1/1942 | Retired 1980, Scrapped |
| 4912 | 4912 | — | 4912, 912, 4912 | PRR/GE | 1/1942 | Retired 1981, Scrapped |
| 4913 | 4913 | — | 4913, 913, 4913 | PRR/GE | 1/1942 | Retired 1980, Preserved |
| 4914 | 4914 | — | 4914, 914, 4914 | PRR/GE | 6/1942 | Retired 1981, Scrapped |
| 4915 | 4933 | — | 4933 | PRR/Westinghouse | 6/1942 | Retired 1979, Scrapped |
| 4916 | 4916 | — | 4916, 915, 4915 | PRR/GE | 6/1942 | Retired 1980, Scrapped |
| 4917 | 4934 | 4934 | 4934 | PRR/Westinghouse | 6/1942 | Retired 1/1979, Preserved |
| 4918 | 4918 | — | 4918, 916, 4916 | PRR/GE | 7/1942 | Retired 1981, Preserved |
| 4919 | 4919 | — | 4919, 917, 4917 | PRR/Westinghouse | 7/1942 | Retired 1981, Preserved |
| 4920 | 4920 | — | 4920, 918, 4918 | PRR/GE | 7/1942 | Retired 1981, Scrapped |
| 4921 | 4936 | 4936 | — | PRR/Westinghouse | 7/1942 | Retired 3/1979, Scrapped |
| 4922 | 4937 | 4937 | — | PRR/GE | 8/1942 | Retired 3/1979, Scrapped |
| 4923 | 4938 | — | 4938 | PRR/GE | 8/1942 | Retired 1/1979, Scrapped |
| 4924 | 4924 | — | 4924, 919, 4919 | PRR/GE | 8/1942 | Retired 1980, Scrapped |
| 4925 | 4925 | — | 4925, 920, 4920 | PRR/Westinghouse | 8/1942 | Retired 1980, Scrapped |
| 4926 | 4926 | — | 4926, 921, 4921 | PRR/Westinghouse | 9/1942 | Retired 1981, Scrapped |
| 4927 | 4939 | — | 4939 | PRR/GE | 9/1942 | Retired 1981, Preserved |
| 4928 | 4928 | — | 4928, 922, 4922 | PRR/Westinghouse | 10/1942 | Retired 6/1978, Scrapped |
| 4929 | 4929 | — | 4929, 923, 4923 | PRR/Westinghouse | 2/1943 | Retired 12/1979, Scrapped |
| 4930 | 4930 | — | — | PRR/Westinghouse | 2/1943 | Retired 10/1968, Scrapped |
| 4931 | 4931 | — | 4931, 924, 4924 | PRR/Westinghouse | 2/1943 | Retired 1981, Scrapped |
| 4932 | 4932 | — | 4932, 925, 4925 | PRR/GE | 3/1943 | Retired 1981, Scrapped |
| 4933 | 4933 | — | 4933, 926, 4926 | PRR/Westinghouse | 3/1943 | Retired 1981, Preserved |
| 4934 | 4934 | — | 4934, 927, 4927 | PRR/GE | 3/1943 | Retired 1981, Scrapped |
| 4935 | 4935 | — | 4935 | PRR/GE | 4/1943 | Retired 1981, Preserved |
| 4936 | 4936 | — | — | PRR/GE | 4/1943 | Retired 4/1971, Scrapped |
| 4937 | 4937 | — | 4937, 928, 4928 | PRR/Westinghouse | 4/1943 | Retired 1981, Scrapped |
| 4938 | 4938 | — | 4938, 929, 4929 | PRR/GE | 6/1943 | Retired 1979, Scrapped |
Engine 4800 was built as 4899 and renumbered in November 1934. It is the riveted prototype, Old Rivets, and it is at the Railroad Museum of Pennsylvania. Engine 4890 was sold to the B&O Railroad Museum on March 20, 1981, and in 1995 it went to the National Railroad Museum at Green Bay, where it is indoors in Tuscan red with pinstripes. Engine 4876 is the GG1 that ran through the end of the platform at Washington Union Station with the Federal Express on January 15, 1953. It is outdoors at the B&O Railroad Museum.
Sixteen GG1s were set aside. Locations and condition notes below are the survey recorded with this roster in November 2024.
| PRR | Where | Owner | Condition in 2024 |
|---|---|---|---|
| 4800 | Ronks, Pa. | Railroad Museum of Pennsylvania | Fair. Outdoors, black |
| 4859 | Harrisburg, Pa. | Railroad Museum of Pennsylvania | Fair. Under roof at Harrisburg station, Brunswick green, pinstripes |
| 4876 | Baltimore, Md. | B&O Railroad Museum | Derelict. Outdoors. The January 15, 1953 Federal Express engine |
| 4877 | Boonton, N.J. | United Railroad Historical Society of New Jersey | Good. Outdoors, Brunswick green, pinstripes |
| 4879 | Boonton, N.J. | United Railroad Historical Society of New Jersey | Good. Outdoors, Brunswick green, single stripe |
| 4882 | Elkhart, Ind. | National New York Central Railroad Museum | Poor. Outdoors, black |
| 4890 | Ashwaubenon, Wis. | National Railroad Museum | Excellent. Indoors, Tuscan red, pinstripes |
| 4903 | Frisco, Tex. | Museum of the American Railroad | Fair. Outdoors, Brunswick green, single stripe |
| 4909 | Cooperstown Junction, N.Y. | Leatherstocking Railway Museum | Derelict. Outdoors, black and primer |
| 4913 | Altoona, Pa. | Railroader’s Memorial Museum | Fair. Outdoors, Tuscan red, pinstripes, faded |
| 4917 | Cooperstown Junction, N.Y. | Leatherstocking Railway Museum | Derelict. Outdoors, black and rust, still in Penn Central / Conrail dress |
| 4918 | St. Louis, Mo. | Museum of Transportation | Poor. Under the train shed, black |
| 4919 | Cooperstown Junction, N.Y. | Leatherstocking Railway Museum | Derelict. Outdoors, black and primer |
| 4927 | Union, Ill. | Illinois Railway Museum | Good. Under a shed, Brunswick green, pinstripes |
| 4933 | Solvay, N.Y. | Central New York Chapter, NRHS | Fair. Outdoors, Tuscan red, pinstripes, faded |
| 4935 | Ronks, Pa. | Railroad Museum of Pennsylvania | Excellent. Indoors, Brunswick green, pinstripes |
A return to operation has stayed out of reach for a practical pair of reasons. The cooling oil in the transformer is a polychlorinated biphenyl, and the frames of engines that worked for decades show serious cracking. The sixteen that remain are museum pieces. Several of them, 4935 and 4890 indoors, 4859 under the trainshed roof at Harrisburg, still show what the class looked like when it was the Pennsylvania’s own.
Related pages: Pennsylvania Railroad · PRR steam roster (post-1906) · PRR diesel roster · Broadway Limited · PRR passenger trains · Trainphone · New York & Long Branch · Penn Central · Conrail · E60 · AEM-7
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