12. Chrysler 440 V8
Available between 1965 and 1978, the Chrysler 440 CID V8 was one of the most popular big blocks on the market. It was the last version of the ancient RB big-block V8. This engine was a feature in almost all Chrysler products, from Dodge and Plymouth to Chrysler and Imperial. The 440 was a tough, dependable unit and the performance intake made it one of the best muscle car street engines ever.
The high-performance versions produced 375 HP, but with the “Six Pack” intake system containing three two-barrel carburetors, power output was 395 HP. The 440 V8 was often compared to the Hemi since they produced similar power and they used them in the same models. However, the Hemi was a little more powerful and had much more tuning potential for those serious racers. During the ’70s, the compression levels declined, and so did the power levels. That meant that in 1978, the 440 V8 was just a big engine without power. Even in the “police interceptor” package for 1978, the once-mighty 440 V8 produced just 255 HP.