6. Cobra Jet
The Cobra Jet or CJ was Ford’s prime muscle car engine they introduced in 1968. It was available in the Mustang, Shelby and Torino. It was a 428 cubic inch V8 they rated at 335 HP. But as always, the power was closer to 450 HP. Even though Ford had several other powerful engines for its muscle cars, the 428 Cobra Jet was the option to have.
Due to its availability in the whole Mustang or Torino range, you could order your Cobra Jet in a plain body. That way, you’d have a true sleeper without spoilers or a graphics package. However, now those cars are rare and command high prices.