speaking of movies

[4vxc]

many years ago I saw a 70's movie with a lot of chases through small towns. One line I remember was the local cop asking some guy what sort of car were the bad guys driving and he told them it had a 351 Cleveland and the cop asked how he knew that. He said something like " I would know that sound anywhere" or something similar. Have not seen it since and have no idea what movie it was, any ideas?