How Fast Were They Then, and How Do They Stack Up Now?
Starting with the 289 High Performance option in 1964, the Mustang quickly evolved into Shelbys, Cobra Jets, Bosses, and Mach 1s. Our most reliable source of information comes from the road tests of the day published in magazines. The times listed are surprising to me and perhaps to you as well. Looks like the S197 GT could have held their own in this bunch of ground pounders.
'65 Fastback - 289 Hi-Po - 14.0/100 - 4-spd. - 4.11 - Car & Driver, Oct. 1964
'66 GT350S - 289/306hp Cobra - 14.0/102 - auto - 3.89 - Motor Trend, Aug. 1966
'67 GT500 - 355hp 428 - 14.3/92 - auto - 3.25 - Sports Car Graphic, March 1967
'67 GT350 - 289/306hp Cobra - 15.3/91 - 4-spd. -3.89 - Sports Car Graphic, March 1967
'68 GT 390 Fastback - 14.8/94.6 - N/A - 3.25 - Car & Driver, March 1968
'68 GT500KR 428 CJ - 14.56/99.77 - auto - 3.50 - Super Stock, Aug.
'68 ½ - 428 CJ - Fastback - 13.56/106.6 - 4-spd. - 3.89 - Hot Rod, March 1968
'69 Mach 1 - 429 CJ - 13.86/102 - auto - 3.91 - Car Life, March 1969
'69 Boss 429 CJ - 13.34/112 - 4-spd. - 3.91 - Cars, Sept. 1969
'70 Boss 302 - 14.03/100.55 - 4-spd. - 4.30 - Super Stock, Jan. 1970
'71 Mach 1 429 CJ - 13.40/105 - auto - N/A - Sport Car, 1971
'71 Boss 351* - 13.74/104.28 - 4-spd. - 3.91 - Car Craft, March 1971
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