@Lou1985 posted:If you take away the tender and just measure the length of the locomotive a 2900 is longer than a Y3. The tender on a 2900 is massive, but so is the locomotive itself.
Interestingly enough, according to Iron Horses of the Santa Fe Trail, the Santa Fe was impressed with their ex-N&W Y3's steaming abilities that they were considering mounting the Y3 boilers on some 3751 class Northerns.
Rusty