EMD has been well-known for its demonstrator locos over the years. They constructed several SD70ACe demonstrator locos including GM70-73. GM70 was a pre-production unit with a unique carbody, but the others ushered in the final design for the âACe. They were later sold to KCS.
HO GEN SD70ACE Locomotive, EMDX Demonstrator #GM71 Video Overview
EMD has been well-known for its demonstrator locos over the years. They constructed several SD70ACe demonstrator locos including GM70-73. GM70 was a pre-production unit with a unique carbody, but the others ushered in the final design for the âACe. They were later sold to KCS.