Montreal Locomotive Works built Alco S4

    Early MLW built S4's had a riveted car body. Later S4's had a welded car body and exposed car body filters.

    Data
    Years Produced: 1950-1957
    Number Produced: 145
    Engine Type: 6 cyl 539
    Horse Power: 1000

    Production Numbers
    36 - CN 7995-8014, 8016-8025, 8028-8033 (early S4)
    77 - CN 8036-8079, 8163-8195 (late S4)
    20 - CP 7099-7118
    1 - Abitibi Power & Paper 80
    2 - Alma & Janquiere 101,102
    4 - Asbestos & Danville 46-49
    1 - Falconbridge Nickel Mines 108
    1 - Ontario Northland 1203
    3 - Quebec Iron & Titanium 1,2 & 4

    Examples
    CP 7113
    Photo by: Jim Booth
    		 CP 7113

    - Vancouver BC. Sept. 1981

    CN 8021
    Photo by: Jim Booth
    		 CN 8021

    - early S4
    - London ON. Oct. 1982

    CN no.8062
    Photo by: Brian Nicholson
    		 CN 8062

    - late S4
    - working in the oil refineries in east-end Montreal


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