EMD SD38

{{Redirect|SD38|the state highway|South Dakota Highway 38}}

{{more footnotes|date=March 2017}}

{{Infobox locomotive

| name = EMD SD38

| powertype = Diesel-electric

| gauge = {{track gauge|ussg|allk=on}}

| image = NS locomotive 3809 in Buckeye Yard, (Columbus, Ohio).jpg

| caption = Norfolk Southern #3809.

| fuelcap = {{convert|3,200|USgal|abbr=on}}

| aarwheels = C-C

| builder = General Motors Electro-Motive Division (EMD)

| buildmodel = SD38, SDP38, SD38M

| builddate = May 1967 – October 1971

| primemover = EMD 16-645E

| enginetype = V16 diesel

| cylindercount = 16

| poweroutput = {{convert|2,000|hp|MW|abbr=on|lk=in}}

| totalproduction = 108 SD38; 40 SDP38

}}

The EMD SD38 is a 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division between May 1967 and October 1971. It had an EMD 645 16-cylinder engine generating {{convert|2,000|hp|MW|lk=in}}, compared to the turbocharged EMD 645E3 V-16 engine that produced 3000 horsepower. Aside from the 3-axle trucks and a longer frame to accommodate them, the SD38 was identical to the GP38; the SD38 had the same frame as the SD39, SD40 and SD45. 52 were built for American railroads, one was built for a Canadian railroad, four were exported to a mining firm in Jamaica and seven were exported to a mining firm in Venezuela. The SD38 was succeeded by a Dash 2 version called the EMD SD38-2.