600 Hp (450 KW) S Series
The production S series locomotives are identical except for cast or welded underframes, which are identical to those used under the N-series 900 hp (670 kW) locomotives. The hood on the S series is shorter, and the locomotives have a characteristic, rounded-edged "satchel" in front of the radiator. The straight-8 600 hp (450 kW) Winton 201-A engine moved the exhaust stacks off-center to the engineer's left, while the N series' were central. The Winton-engined switchers can be distinguished from later EMD 567-engined units by small louvres at the top front sides of their hoods, as well as top-of-hood ventilation through several lifting vents rather than the large top grille of those later units.
The 600 hp (450 kW) series was much more successful than the 900 hp (670 kW) during this early period; 114 were sold.
Read more about this topic: EMC Winton-engined Switchers
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