Car Life called it the "Super Double Deluxeburger Mustang" because Ford decided to add the 390 big-block to the Mustang's engine lineup. With 320 hp and 427 lb-ft of torque, the pony-sized Mustang finally had some beef to compete against big-block GTOs and Barracudas, not to mention the new 396 Camaro. In stock form, the 390 Mustang was a low-to-mid-15-second performer, as evidenced by most of the road tests. Car & Driver reported a 14.8-second e.t. and even complained that the car was not in optimum tune, but failed to provide the transmission type or how they managed to obtain a quicker time than anyone else. Hi-Performance Cars magazine, however, explained that it took a set of slicks and traction bars to register their 14.95-second e.t., stating, "Normally, the 390 engine cannot be considered hot by today's standards. However, when packed into a light Mustang, you have a pretty impressive machine."
'68 GT Fastback - 14.8/94.6 - N/A - 3.25 - Car & Driver, March 1968 '67 GTA Fastback* - 14.95/97.60 - auto - 3.25 - Cars, Sept. 1967 '68 Fastback - 15.2/94 - auto - 3.25 - Motor Trend, Jan. 1968 '67 GTA Fastback - 15.2/91 - auto - 3.00 - Car & Driver, Nov. 1966 '67 GTA Fastback - 15.31/93.45 - auto - 3.25 - Hot Rod, March 1967 '67 Fastback - 15.5/91.4 - auto - 3.25 - Car Life, Jan. 1967 '67 N/A - 15.6/94 - 4-spd. - N/A - Motor Trend, May 1967
*Slicks and traction bars