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Reply to "Alco RS-3-- come on 3rd rail"

@GG1 4877 posted:

The program of modifications was started by Penn Central in 1972 at the former NYC DeWitt shops and the former PRR Altoona shops.  Conrail continued to do RS3 rebuilds until 1978.  There are a lot of variations on the RS3m models from lowered hoods of varying heights to boxy enclosures where an EMD prime mover was used to replace the original Alco one.



@Bob posted:

That's a shop modification, not an option from Alco.  Note the twin stacks on the long hood.  The original Alco prime mover and electrical equipment have also been replaced by an EMD prime mover and EMD electrics.  Some of these modifications were done by Conrail and some were done by Penn Central.  The locomotives were classed RS3m.

EDIT - Looks like Jonathan is a faster typist than I am!

Both responses are appreciated, always interesting to learn new things.

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