List of GM-EMD locomotives

Columns: Model designation | Build year | Total produced | AAR wheel arrangement | Prime mover | Power output
T | 1936 | 1 | B-B+B-B | Dual Winton 12-201-A | 1,800 hp ( 1,342 kW ) | NW | 1937-1938 | 8 | B-B | Winton 12-201-A | 900 hp ( 671 kW ) | NW1 | 1937-1939 | 27 | B-B | Winton 12-201-A | 900 hp ( 671 kW ) | NW1A | 1938 | 3 | B-B | Winton 12-201-A | 900 hp ( 671 kW ) | NW2 | 1939-1949 | 1,145 | B-B | EMD 12-567 or 12-567A | 1,000 hp ( 750 kW ) | NW3 | 1939-1942 | 7 | B-B | EMD 12-567 | 1,000 hp ( 750 kW ) | NW4 | 1938 | 2 | B-B | Winton 12-201-A | 900 hp ( 671 kW )

Example questions:
What is the highest hp output of any GM-EMD model that was available with one-piece cast underframes ? A | What company was the lone initial buyer of the GM-EMD locomotive model produced from 1939 to 1942 ? | What was the initial production year for the prime mover of the last GM-EMD model produced ? | What prime mover was used for the GM-EMD model that had a couple of locomotives sent to Union Belt of Detroit ? | What was the closing month and year of production for the GM-EMD model with the greatest horsepower output ?

Answers:
1,800 | Great Northern Railway | 1938 | EMD 12-567A | December 1949