April 26th is Hemi Day, but what does that mean?

April 26th is known as Hemi Day to some Mopar fans, as it corresponds with the displacement of the 426 Hemi V8 engine. A modern 1,000 hp Hellephant version of the motor is currently on sale for custom car builds starting at $29,995.

It's a reference to the numerical version of the date, 4/26, which corresponds with the displacement of the 426 cubic-inch Hemi V8 of 1964-1971 that is affectionately known as "The Elephant." The engine was one of the second generation of Chrysler Corporation V8s to feature a hemispherical combustion chamber and became a legend when it was banned from NASCAR after dominating its debut season. Chrysler continued to develop it as a drag racing motor and launched a mass-market street version in 1966.