Think again if you believe Yenko was the classic Camaro tuner. There were several well-known names in the business, but the most extreme was Baldwin Motion (via Silodrome). Their 427 conversions for the early 1970s models were simply the best. Baldwin Motion installed numerous exceptional performance parts.
They delivered them with a written warranty that the vehicle could achieve 10-second quarter-mile times and produce 500 HP. Today, Baldwin Motion Camaros are highly sought-after and valuable pieces of muscle car history.
The third redesign of the Mustang appeared for the 1969 model year and the car grew again. Ford produced it for only two years in 1969 and 1970. The Boss 302 featured a 302 V8 engine conservatively rated at 290 HP. The real output was closer to the 350 HP mark though (via Ford).
The Boss 302 was a model Ford intended for racing in the Trans-Am championship. Apart from the blackout hood, spoiler on the trunk, and other details, it featured a stiff, track-tuned suspension, a close-ratio gearbox, and a high-revving engine.
A young engineer named John Z. DeLorean thought of a genius idea. He wanted to install a big, powerful 396 V8 into a light, intermediate Tempest two-door body. He knew it was an easy and affordable way to create a true performance machine. For just $295, buyers could get a high-performance 396 V8 with 325 HP in a standard or 348 HP in the famous Tri-Power form (via Muscle Car Facts).
The package included a manual transmission, unique trim, GTO decals, and dual exhaust. And since the car was light, the Tempest GTO delivered a convincing performance. In fact, in 1964, it was one of the quickest American cars on the market. Even Corvette owners weren’t safe from Tempest GTOs lurking at stop lights across the country. The big sales made it clear the GTO was a hit among younger buyers and that a star was born.