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Specifications
Specifications
Configuration:;
• Whyte	4-6-4
• UIC	2′C2′ h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	84 in (2,134 mm)
Length	101 ft 9+3⁄4 in (31.03 m)
Height	15 ft 11+21⁄32 in (4.87 m)
Adhesive weight	216,000 lb (98,000 kilograms; 98 metric tons)
Loco weight	412,000 lb (187,000 kilograms; 187 metric tons)
Total weight	791,500 lb (359,000 kilograms; 359.0 metric tons)
Fuel type	Coal, later converted to burn Oil in 1946-1947
Fuel capacity	50,000 lb (23 metric tons), later 6,000 US gal (23,000 L; 5,000 imp gal)
Water cap.	20,000 US gal (76,000 L; 17,000 imp gal)
Firebox:
• Grate area	90.7 sq ft (8.43 m2)
Boiler pressure	300 lbf/in2 (2.07 MPa)
Heating surface	3,958 sq ft (367.7 m2)
Superheater:;
• Heating area	1,884 sq ft (175.0 m2)
Cylinders	Two
Cylinder size	25 in × 29 in (635 mm × 737 mm)

Type and origin
Type and origin
Power type	Steam
Builder	American Locomotive Company
Serial number	68982–68989, 69028
Build date	1937
Total produced	9

C&NW class E-4
C&NW class E-4
	A C&NW E-4 waiting to be refueled at a Chicago-area coaling station in December 1942
Power type
Type and origin
Power type	Steam
Builder	American Locomotive Company
Serial number	68982–68989, 69028
Build date	1937
Total produced	9
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-4
• UIC	2′C2′ h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.	84 in (2,134 mm)
Length	101 ft 9+3⁄4 in (31.03 m)
Height	15 ft 11+21⁄32 in (4.87 m)
Adhesive weight	216,000 lb (98,000 kilograms; 98 metric tons)
Loco weight	412,000 lb (187,000 kilograms; 187 metric tons)
Total weight	791,500 lb (359,000 kilograms; 359.0 metric tons)
Fuel type	Coal, later converted to burn Oil in 1946-1947
Fuel capacity	50,000 lb (23 metric tons), later 6,000 US gal (23,000 L; 5,000 imp gal)
Water cap.	20,000 US gal (76,000 L; 17,000 imp gal)
Firebox:
• Grate area	90.7 sq ft (8.43 m2)
Boiler pressure	300 lbf/in2 (2.07 MPa)
Heating surface	3,958 sq ft (367.7 m2)
Superheater:;
• Heating area	1,884 sq ft (175.0 m2)
Cylinders	Two
Cylinder size	25 in × 29 in (635 mm × 737 mm)
Tractive effort
Performance figures
Tractive effort	55,022 lbf (244.75 kN)
Operators
Career
Operators	Chicago and North Western Railroad
Numbers	4001–4009
Retired	1953–1956
Scrapped	1953–1961
Disposition	All scrapped

The Chicago and North Western Class E-4 was a class of nine streamlined 4-6-4 "Hudson" steam locomotives built in 1937 by the American Locomotive Company (ALCO).

The nine E-4's were almost identical in specification and purpose to the Milwaukee Road's six class F7 locomotives, and they were built by the same builder at the same time, yet their streamlined designs were different. The E-4's were built to haul the Chicago and North Western's (C&NW) famous "400" express passenger trains, but before they were even delivered, the railroad's management decided that streamlined steam was the wrong direction and instead placed orders with General Motors Electro-Motive Division for new diesel locomotives.

The displaced E-4s instead pulled secondary passenger trains, until they were withdrawn from service between 1953 and 1956, and scrapping commenced on the fleet. Two remaining E-4's (Nos. 4008 and 4009) were kept in Escanaba, Michigan to thaw frozen ore with heat from their boilers.^[2] In August 1961, Nos. 4008 and 4009 were replaced by a new infrared process, and since both E-4's had been welded to the rails, C&NW crews had to scrap them on site.^[2]

Other C&NW steam locomotives

Chicago and North Western D Class 4-4-2 – A major workhorse of the C&NW, some were used on the Minnesota 400.
Chicago and North Western E Class 4-6-2 – Some converted to "ES" class with similar casing to the E-4. The ES engines succeeded Class D locomotives on the Minnesota 400.
Chicago and North Western E-2 Class 4-6-2 – Twelve locomotives, four of which were converted to "E-2-a" class and were the original locomotives for the Twin Cities to Chicago 400 before being replaced by EMD E3 diesel units. The remaining eight were converted to "E-2-b" locomotives.^[3]

References

^ Cole (1938), p. 62.
^ ^a ^b "Steam! News Photos". Trains. Vol. 22, no. 5. Kalmbach Publishing. March 1962. p. 12. Retrieved February 8, 2024.
^ Scribbins, Jim (2008) [1982]. The 400 Story. Minneapolis, Minnesota: University of Minnesota Press. ISBN 978-0-8166-5449-9.