From a low of 120hp to a high of 500hp in the 2007 Shelby GT500
Depends on which engine is under the hood ... please be more specific
ANSWE!R. Rated at 320 BHP. 1999 models had a recall to have the intake manifold extrude-honed because the engines weren't making the full power rating since the manifold design was changed.
About 5 Wheel Horse Power. Same as today!
1967 Mustang specs: Available Engines: 200cid 6cyl 1V 120hp 289cid 2V V-8 200hp 289cid 4V V-8 225hp 289cid 4V V-8 271hp 390cid 4V V-8 320hp