1. Plymouth Barracuda 426 Hemi
The Plymouth Barracuda was the first pony car, introduced two weeks before the Ford Mustang, and despite cool design and features, it was always in the shadows of the Mustang and Camaro. However, in 1970, a redesigned model arrived along with Dodge Challenger, built on the same platform and with the same engines. As with Dodge, the most powerful versions were 440 Magnum with 395 hp and Hemi 426 with 425 hp.
Everybody agrees that Hemi produced more than the advertised power and that the real output was closer to 500 hp than to declared 425 hp. However, this engine option was quite expensive and cost about 1/3 of the car’s price. That is why only a small number of Hemi-equipped Barracudas left the factory in 1970 and 1971, and most buyers were serious street racers who wanted one of the fastest muscle cars ever built. The Hemi 426 in Plymouth Barracuda could sprint to 60 mph in just 5.4 seconds. Interestingly, this time, documented by the magazine testers back in the day, its performance could be improved by just a few simple modifications to the intake, ignition, and carburetor jets so tuned Barracudas could go even faster.