How much horsepower does a 1964 Mustang have?

Answer 1

From the Mustang forums:

The 1964 Mustang did not have many models, just the coupe and the convertible. The biggest difference was that there were four different engine options for the coupe and convertible. These included a 170 cubic inch engine with 105 horsepower with 9.1:1 compression and a carburetor with one barrel, a 260 cubic inch engine with 164 horsepower with 8.8:1 compression and a two barrel carburetor, a 289 cubic inch engine with 210 horsepower with 9.0:1 compression and a four barrel carburetor, and finally the most powerful 289 cubic inch engine with 271 horsepower, 10.5:1 compression, and a four barrel carburetor. Consumers loved the different engine options on the coupe and convertible.

http://mustangforums.com/timeline/1964-Ford-mustang/

P.S. It's rather easy to Google this kind of information :)