What are the visual external differences between the SD-60M and SD-70MAC? Length? Doors? Fans? Grills? Thanks! Aaron
SD70MACs are longer than the SD60Ms. They have a space between the rear grills and the end of the long hood that the SD60Ms dont. There are also some grills under the radiator fans. The brake wheel on the engineers side has been moved back and indented on the SD70MAC. The SD60M has standard HTC trucks, but all SD70MACs have EMD's newer HTCR trucks. These Radial trucks add 8% more tractive effort than the SD60Ms. This is the main spotting feature. SD60Ms occupy numbers 9200 to 9299 on BNSF's numbering plan. BNSF 9299 was former BN Desert Storm 1991. It wore a special paint scheme for desert storm. BNSF 9400-9710 and BNSF 9713-9716 were former BN 9400-9710, BN 9713-9716. BNSF 9711, 9712, 9717-999, 8800-8984 were all lettered for BNSF. Anything else?????
