It is very rare and valuable to find a 1964 Chevrolet Impala SS. If it has something original under the hood, it is even more valuable.  

The top-of-the-line Impala was the SS. In 1964, the Impala was the best-selling car in the United States.  

The Impala SS came with a range of V8 engines, from the 283 to the 409, but the 327 L76 is the most popular.  

This engine was a solid-lifter, high-compression version of the 327. 

It had 365 hp and 350 lb-ft of torque.

It was the same engine that the Corvette Sting Ray had too. There was only one year that the 327 L76 could be put in the Impala SS,

and only 1,894 were made. It is nearly impossible to find a 1964 Impala SS with this engine and low miles. If you do, it will be very valuable.