We grouped the '67 Shelby GT350 and GT500 together because they are truly one-of-a-kinds. The 306hp version of the 289 High Performance still powered the GT350, but the restyled '67 was heavier than its '65-'66 counterparts, and in 1968, Shelby went with the 302 4V. For the new GT500, Shelby utilized a 355hp 428 with twin Holley four-barrels, a setup that disappeared for 1968.
Sports Car Graphic, with Shelby-American team driver and Sports Car Graphic Editor Jerry Titus handling the testing and writing duties, squeezed the best times out of the GT350 and GT500, 15.3 and 14.3 respectively. Car & Driver was disappointed with its 15-flat e.t., but noted, "What the old Shelby Mustang (earlier GT350) does with difficulty, the GT500 does easily."
Motor Trend pitted the GT350 and GT500 against small-block and big-block Corvettes. Even though the GT350 posted only a 15.9, it beat out the small-block Corvette's 16.1 e.t. However, the GT500, with a 14.5 time, stood little chance against a 435hp Tri-power Corvette, which ran a 13.8.
'67 GT500 - 14.3/92 - auto - 3.25 - Sports Car Graphic, March 1967 '67 GT500 - 14.5/101 - 4-spd. - 3.89 - Motor Trend, May 1967 '67 GT500 - 15.0/95 - auto - 3.25 - Car & Driver, Feb. 1967 '67 GT350 - 15.3/91 - 4-spd. - 3.89 - Sports Car Graphic, March 1967 '67 GT350 - 15.50/92.90 - 4-spd. - 3.89 - Popular Hot Rodding, Feb. 1967 '67 GT350 - 15.9/90 - 4-spd. - 3.89 - Motor Trend, May 1967