Length 8,6m (28ft)
Width 3,51m (11,6ft)
Height 2,77m (9,1ft)
Weight 40,9Ton
One 90 mm T15E1 cannon, a 12.7 mm M2HB machine gun and a 7.62 mm M1919A4 machine gun
Engine Ford GAF engine
Power 500hp (372kW) 10hp (7,4kW)/Ton
4-Speed Manual Transmission (3 Forwards; 1 backwards)
Top Speed 40 km/h (25mph)
-13 km/h (8mph)
History:
The T26E1-1, nicknamed “Super Pershing,” was a prototype U.S. medium tank developed during World War II, specifically an up-gunned variant of the M26 Pershing. Only 1 Prototype was ever built.
Super pershing my beloved 
that would be the t26e4
50/50. The T26E1-1 is the prototype, let’s call that. But then the T26E4 is the final result