In 1969, Ford decided to introduce the Boss 302 to compete with the Camaro Z-28. In addition, Ford decided to produce the Boss 429 to homologate the 429 for NASCAR. The 302 officially produced 290 hp, but this figure was probably closer to 400. The 429 was said to produce up to 440 hp, no where near the official 375 hp figure.
The 302, with all its power, was no disappointment on the track either. Car and Driver called it "the best handling Ford to ever come out of Dearborn." With modified racing suspension, the 302 definitely was a deft handler. But a huge Holley four-barrel, giant 2.2 inch intake valves with Cleveland heads, and wide dual exhausts helped make this car known for its speed.
On the other hand, the 429 was not known for its handling characteristics. The engine was not light or compact by any means, so extensive modification to the front suspension was necessary to get it to fit. Also, this Boss required a rear stabilizer bar, and someone behind the wheel who could cope with the heavy front end. It also bore a large hood scoop which allowed colder, denser air to reach the engine.
These two automobiles truly capture the essence of the muscle car era, with big blocks, wide tires, and four speeds.