Southern Pacific SD9 question

Trains Magazine Locomotives
1

Hi all

I would like to know when was that the SP SD7s renumbered after 1965 into 3800 series were again renumbered into the 4300 serial numbers ?

thanks very much for your reply

stefano

2

The renumbering of the SD9’s into the 4300 series was because of a capital rebuild program at Sacramento Shops beginning in 1970. The renumbering was not in sequence and each SD9 got a new number when it came out of the shop.

3

Thanks very much indeed for your reply

regards

stefano