The reference for locomotives and railcars


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New York Central class K-3
United States | 1911 | 231 produced
K-3q No. 4889
K-3q No. 4889

After the K-2 class Pacifics, which did not have a superheater from the factory, the New York Central had a larger number of superheated K-3 built between 1911 and 1925. Their task was to pull the heaviest express trains. Numerous series from the K-3a to the K-3r were produced, with the latter being built for the Big Four. The different series were almost identical in the basic dimensions, but there were differences in the boiler. Some of the locomotives had a booster on the trailing axle

VariantK-3a, c, d, gK-3f, h, i, mK-3nK-3p, q
ManufacturerALCO, BaldwinALCO
Axle config4-6-2 (Pacific) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Wheelbase36 ft 6 in
Fixed wheelbase14 ft
Total wheelbase68 ft71 ft68 ft 3 in68 ft 1 in
Service weight271,000 lbs296,500 lbs288,800 lbs288,000 lbs
Adhesive weight172,000 lbs194,500 lbs189,400 lbs194,500 lbs
Total weight424,700 lbs503,510 lbs447,000 lbs455,600 lbs
Axle load57,333 lbs64,833 lbs63,133 lbs64,833 lbs
Water capacity7,500 us gal10,000 us gal
Fuel capacity24,000 lbs (coal)32,000 lbs (coal)
Power sourcesteam
Indicated power2,100 hp (1,566 kW)
Estimated power2,100 hp (1,566 kW)2,150 hp (1,603 kW)
Optimal speed43 mph44 mph43 mph
Starting effort30,898 lbf
Booster9,710 lbf
Power Plant
Driver diameter79 in
Boiler pressure200 psi
Expansion typesimple
Cylinderstwo, 23 1/2 x 26 in
Grate area56.5 sq ft
Firebox area231 sq ft230 sq ft231 sq ft
Tube heating area3,193 sq ft3,531 sq ft3,192 sq ft3,193 sq ft
Evaporative heating area3,424 sq ft3,762 sq ft3,422 sq ft3,424 sq ft
Superheater area823 sq ft893 sq ft823 sq ft832 sq ft
Total heating area4,247 sq ft4,655 sq ft4,245 sq ft4,256 sq ft
Calculated Values
steam locomotive
last changed: 03/2023

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