With all the praise heaped on the Mach 1 and Boss 302, the Boss 429 Mustang must have raised the expectations of the magazine road testers. Even though Super Stock and Hi-Performance Cars posted solid 13-second times for the '69 Boss 429 (apparently with the same car obtained from a Ford dealership), they were less than flattering with their headlines of "Ford's Not-So-Boss 429" and "Boss Loss." It almost sounds as if they were expecting a 12-second factory musclecar right out of the box, and they were disappointed when the big hemi-headed 429 mustered only 13s. However, Car Life came away impressed, even with a 14.09 e.t., as they tagged the Boss 429 as the "best enthusiast car Ford has ever built."
'69 Boss 429 - 13.34/112 - 4-spd. - 3.91 - Cars, Sept. 1969
'69 Boss 429 - 13.64/104.65 - 4-spd. - 3.91 - Super Stock, June 1969
'69 Boss 429 - 14.09/102.85 - 4-spd. - 3.91 - Car Life, July 1969