Six more 4-6-4s were designed by the Santa Fe in 1936 and ordered and received from Baldwin in 1937 (road numbers 3460 through 3465). They were oil burners and of a larger and more robust design then the earlier ten. One of this last group, number 3460, was built as a streamlined locomotive and called the "Blue Goose", the only one the road would have. These last six had 23.5 x 29.5 cylinders, 84" drivers, a boiler pressure of 300 psi and a tractive effort of 49,300 pounds.
In December of 1937, number 3461 led a train from Los Angeles all the way to Chicago a distance of 2,227 miles to set a world's distance record for a steam locomotive.
There are two surviving AT&SF 4-6-4s, number 3450, at the LA County Fairplex in Pomona, CA and number 3463, at the Expocenter in Topeka, KS.
| Class | Qty. | Road Numbers | Year Built | Builder |
|---|---|---|---|---|
| 3450 | 10 | 3450-3459 | 1927 | Baldwin |
| 3460 | 6 | 3460-3465 | 1937 | Baldwin |
| Specifications | ||
|---|---|---|
| Class 3450 | Class 3460 | |
| Wheel Arrangement: | 4-6-4 | 4-6-4 |
| Length: | 97' - 11" (91' - 11") | 112' - 7" |
| Drivers: | 74" dia. (73") | 84" dia. |
| Weight on Drivers: | 198,000 lbs | 211,400 lbs |
| Locomotive Weight: | 343,900 lbs (343,000) | 412,380 lbs |
| Locomotive & Tender Weight: | 639,260 lbs (626,000) | 712,500 lbs |
| Grate Area: | 88 sq ft | 98.5 sq ft (99.5) |
| Cylinders: | (2) 25" dia. x 28" stroke | (2) 23.5" x 29.5" stroke |
| Boiler Pressure: | 220 psi | 300 psi |
| Tractive Effort: | 44,250 lbs (44,900) | 49,300 lbs |
| Tender Capacity: | water: 15,000 gals fuel oil: 5,000 gals (20 tons coal) | water: 20,000 gals fuel oil: 7,000 gals |
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