EMD SD70 Series

The Electro Motive Division SD70 Series is a line of high-powered, single engined 4000 hp to 4,300 hp diesel locomotives. The first SD70 units were built in 1992 and production of the SD70ACe and SD70ACe-T4 continues.
==History==
The first variant in the SD70 line was the SD70M, EMD released 20 Demo unit in 1992. The standard cab version came next, the SD70 was ordered by NS, IC and Conrail. But the revolutionary AC-traction powered SD70MAC was eventually introduced in 1993 as the very first successful major type of AC-traction diesel locomotive produced in North America. Other deviations include the SD70I, the SD75I, and SD75M. 
The SD70,SD70I, SD70M, and SD70MAC production could not continue into 2005 due to EPA tier 2 regulations, however, in 2007 the Alaska Railroad received 4 SD70MACs due to Alaska being exempt. These 4 units were built to Tier 1 compliance, and include a HEP generator. These units are known as SD70MAC-T1.
==Versions==
*SD70: Original; first ordered by NS, CR, and IC
*EMD SD70/SD70M: Modified, wide cab version; designed to be safer
*SD70MAC : AC-traction version of the SD70M
*SD70I: "Isolated" cab variation of the SD70M; designation no longer used for original CN units as a result of conversion/upgrades
*SD70ACe : Current version; safer, more reliable, and more energy efficient
*SD70ACe-P4: B1-1B trucked variant of the SD70ACe
*SD70M-2: DC version of the SD70ACe
*SD70ACe-T4: Tier 4 version of the SD70ACe
*SD75M: 4300-hp version of the SD70M; bought only by ATSF and inherited into the BNSF
*SD75I: 4300-hp version of the SD70I; bought only by CN and BNSF
==SD70 Locomotives==
SD70s have a smaller cab than any other SD70 locomotive. SD70s are very similar to SD60 locomotives which are built by Electro-Motive Diesel. These are used by the Norfolk Southern Railway, Canadian National (ex-Illinois Central Railroad examples), and Southern Peru Copper in Mexico.
==Trivia==
*The EMD SD70 Series was also the last series or types of diesel locomotives to be built in EMD's LaGrange, Illinois plant, as well as the last to be built in their London, Ontario shops, and the first to be built in their Muncie, Indiana facility (basically, being one of the only to be built in all three main facilities since production).
*The EMD SD70MAC was one of the first North American diesel locomotives to be AC-traction powered as well as being mass-produced.
*The ATSF (Atchison, Topeka, and Santa Fe; or simply Santa Fe) was the only railroad to purchase the 4300 hp SD75M.  Though similar, the isolated cab SD75I was purchased by CN & BNSF.
*There are many different versions of the SD70ACe. Such as the DC version, known as the SD70M-2, and numerous foreign versions. Such as the SD70ACs and SD70ACe/lc (aside from the Canadian versions as listed above).
*They are considered to be the very first official high-powered, energy-efficient, single-engined, standard prime-mover diesel locomotives produced by EMD.
*The SD70MAC and SD70ACe are often nicknamed, "Mac" and "Ace".
*Norfolk Southern and Union Pacific have several SD70ACe units painted in special heritage schemes to commemorate railroads purchased by themselves, and railroad trackage that was owned by long-gone railroads that they now operate on.
*The SD70ACs has special air intakes on the rear hood of the actual locomotive used for circulating fresh air into the engine compartment and keeping out sand, dust, dirt, and other particles in the desert climate nation of Saudi Arabia.
==Gallery==
EMD SD70ACs.jpg|An EMD SD70ACs, which is the foreign, Saudi Arabian version of an EMD SD70ACe.
EMD SD70ACs 2.jpg|A better example of the rear of the SD70ACs, revealing the large (yet oddly-designed) air intakes.
BNSF SD70MAC.jpg|A former BN (Burlington Northern) SD70MAC, with its merged predecessor's lettering and patchwork: BNSF.
P&L_SD70MACs_MarchMadness.jpg|Two Paducah & Louisville SD70MACs painted for University of Kentucky and University of Louisville.
4361398742095.jpg|Two Union Pacific SD70M No. 4014 and 4884 are towing the Union Pacific Big Boy No. 4014
EMD SD70ACe rear.jpg
UP SD70ACe 8444.jpg|A UP SD70ACe #8444 with Southern Pacific Heritage No. 1996
AC-Powered SD70 Comparison.jpg|8 different SD70M built for the Union Pacific railroad.
IC Primer SD70.jpg
Category:Diesel locomotives
Category:EMD locomotives
Category:Six-axled diesel locomotives
Category:American locomotives
Category:EPA Tier 1
Category:EPA Tier 2
Category:Conrail locomotives
Category:Illinois Central locomotives
Category:Norfolk Southern locomotives
Category:C-C locomotives
Category:BNSF locomotives
Category:Union Pacific locomotives
Category:Built in 1992
Category:Locomotives
Category:Alaska Railroad Locomotives
Category:Burlington Northern locomotives