One of my earliest childhood memories is of my dad taking me to see it land for the very lat time at Wright Patterson. I was just shy of three years old, but I still remember seeing that big bird land. There were cars parked up and down the street by the runway to see it. Anyway, here are the specs:
SPECIFICATIONS
Span: 105 ft.
Length: 185 ft. 10 in. without boom; 192 ft. 2 in. with boom
Height: 30 ft. 9 in.
Weight: 534,700 lbs. loaded
Armament: None
Engines: Six General Electric YJ-93s of 30,000 lbs. thrust each with afterburner.
PERFORMANCE
Maximum speed: 2,056 mph. (Mach 3.1) at 73,000 ft.
Cruising speed: 2,000 mph. (Mach 3.0) at 72,000 ft.
Range: 4,288 miles
Service Ceiling: 77,350 ft.
Source: USAF Museum