Four 1080kW (1450shp) Pratt & Whitney R20002SDBG Twin Wasp 14 cylinder twin row radial piston engines driving three blade constant speed propellers.
Max speed 451km/h (244kt), cruising speed 365km/h (197kt). Service ceiling 22,300ft. Range with a 5200kg (11,440lb) payload 4023km (2172nm).
Empty 19,460kg (43,300lb), max takeoff 33,112kg (73,000lb).
Wing span 35.81m (117ft 6in), length 28.60m (93ft 10in), height 8.38m (27ft 6in). Wing area 135.6m2 (1460sq ft).
Flightcrew of three, standard passenger seating for 44, max seating for 86. Most surviving aircraft configured as freighters.
Total DC-4 production comprised one DC-4E, 78 commercial DC-4s, 1162 military C54 Skymasters and 42 Canadair developed Merlin powered derivatives. Almost 80 remain in commercial service, most as freighters.
Any paint scheme is fine, even just plain. Thanks to anyone who can do it.