Posted by on February 6, 2012 
UP 6922 is a GE AC4460CW. GE AC4460CW's have the body of the GE AC6000CW, but they use the GE AC4400CW's specifications. CSX was gonna do the same to theirs by downgraded CSX's GE AC6000CW's to GE AC4460CW's, but thankfully they've stopped doing this. 633, 666, and 699 were the only 3 CSX GE AC6000CW's that were downgraded to GE AC4460CW's. Now CSX is rebuilding theirs with 6000 Horse Power GEVO-16 Engines to all of their Diesel Locomotive Units. They will be called GE ES60AC's. So far 4 Diesel Locomotive Units from CSX have undergone the Change. The 4 Units are 606, 620, 628, and 640. CSX will upgrade and rebuilt the rest of their GE AC6000CW Fleet to GE ES60AC's in the future.
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