The long-awaited EMD 265H 6,000 horsepower engine finally made its debut in September 1996. The SD90MAC-H can be identified by dual exhaust stacks of the twin-turbo 265H engine, and beveled edges ... (more)

EMD’s SD90MAC-H locomotives head through Leyden, Colorado, for some testing at Plainview on January 30, 1998. Leading is EMD No. 8504 that is painted in a special scheme for EMD’s 75th anniver... (more)

AN unexpected visitor to the Sidney Sub this spring afternoon was EMDX 8504 - one of the ill-fated SD90MACs in EMD's 75th anniversary colors, followed by a test car and two more 90MACs in UP color... (more)

A pair of Union Pacific’s 6,000 horsepower SD90MAC-H locomotives grind away with a southbound freight approaching Tunnel 2 at Bealville, California. The train is in the middle of a long climb of... (more)

CP 9302 leads a freight west through the Fraser River Canyon at Spuzzum, BC. The 9302 was one of four units of this type purchased by CP in December 1999. These locos featured carbodies similar to... (more)

EMDX SD90MAC-H #90 sits with an Oakway painted SD60 at the EMD LaGrange Plant in McCook, IL.

Electro-Motive Division SD90MAC-H demonstrator locomotive No. 8504 heads west on Union Pacific’s former Rio Grande main line at Rocky, Colorado, for some high-altitude testing on February 3, 199... (more)

EMDX Demonstrator 90 sits at EMD's LaGrange Plant.

Powered by a pair of Union Pacific EMD SD90MAC-H 6,000 hp locomotives, a long southbound UP freight grinds upgrade out of Walong, California, climbing Tehachapi Pass on March 28, 2001. This area i... (more)

Electro-Motive Division SD90MAC-H locomotives, along with EMD’s test car, head through Rocky, Colorado, for some testing at Plainview on February 2, 1998. Leading the way on the west end is EMD ... (more)

Union Pacific EMD SD90MAC-H No. 8930 leads an eastbound freight through downtown Laramie, Wyoming, on September 14, 2006.

A pair of EMD SD90MAC-H units and a Southern Pacific SD40M-2 pull a westbound intermodal train through Utah's Tooele Valley on July 8, 2000. UP 8555 and 8553 were assembled by Super Steel Schenect... (more)

A long, heavy Union Pacific freight powered by two SD90MAC-H 6000 horsepower locomotives grinds past the south (east) switch of Walong on California’s Tehachapi Pass on March 28, 2001.

On March 6, 2001, a southbound Union Pacific manifest freight climbing the steep grades of Tehachapi Pass has stalled at Bealville, California, with locomotive problems. No surprise, since this he... (more)

Big MAC Attack! Two 6000 Horsepower SD90MAC-H locomotives drag a lumber laden manifest upgrade at Bealville.