photo taken, St. Paul, Minn, Omaha Shops, 2/22/52, 2:55 P.M.
The J-3 was a somewhat modernized version of the J-2, (USRA Heavy Mike.) it could be easily recognized because of the cast steel Delta trailing truck vs. the Cole trailing truck on the other 2-8-2's plus the air pump although single was mounted on the front deck rather than hanging on the left side of the boiler. Unlike the J-2 but like the J-A, the J-3 had an exhaust steam injector which can be seen mounted low at the forward end of the fire box. Behind the #437 can be seen the famous, or imfamous (depending on the point of view) gas-electric "Namakagon"
Cylinders, Dia. & Stroke=......... 27" x 32" ~ Overall Height =...................... 15'-3,11/16"
Valve, (Piston)............................14" ~ Width over Cylinders =..................10'-3,3/8"
Valve Gear= .......................Walschaert ~ Rigid wheel base = ...........................16'-9"
Driving wheel Diameter =...................63" ~ Engine wheel base = ........................37'-7"
Boiler Pressure,..........................200 lb. ~ Eng length over buffer plates=...... .49'-8,1/8"
Grate Area =.........................70.3 sq. ft. ~ Wheel base, Eng/Tend.=...............72'-3,1/2"
Firebox, L. / W. =.........120,1/8" X 84,1/4". ~ Length Eng. & Tender =..................83'-5"
Length over tube sheets...................19'-0" ~ Wt. on lead truck ......................27,000 lb.
Htg. Surface, Tubes.................4020 sq. ft. ~ Wt. on Trailing Truck..................57,000 lb.
Htg. Surface, Firebox =..............280 sq. ft. ~ Wt. on Drivers =.......................372,277 lb.
Htg. Surface, Arch tubes =............27 sq. ft. ~ Wt. of total Engine =..................333,000 lb.
Evaporative Htg. Surface, total =..4327 sq. ft. ~ Tender Wt., Loaded.................. 188,900 lb.
Superheater surface,(Type "A")... 2000 sq. ft. ~ Tender capacity, Water = ...........10,000 gal.
Evaporative Htg. Surface =........4327 sq. ft. ~ Tender capacity, Coal =..................18 tons.
Boiler Dia. 1st. ring =........... 86,1/8" O.D. ~ Tractive force =.........................63,000 lb.