The 2-10-2 wheel arrangement – also called the "Santa Fe" type got its name from the AT&SF, since they had such a large fleet of them – about 250 locomotives. The 3800 class were the largest 2-10-2’s on the railroad, and like most AT&SF power were built by Baldwin. The 2-10-2 was an improvement on the 2-10-0 "Decapod" type – the trailing truck was added to help guide the engine in reverse.

BLI’s original ATSF 2-10-2’s modeled the 1930’s version. The modernized-version models referenced in this announcement will model this beauty as it was in the late 40’s to 1950’s. This modern 2-10-2 is most readily distinguished by its modified cab, raised running boards, drifting valve gear, and LFM disc main driver. BLI’s new model features these changes as well as several others.