Since 1966, the Trans Am Series has been the battleground for American muscle and motorsports legends. As race week draws closer, let's take a look back. | The Trans Am Series presented by Pirelli

Tunnel Port 302 wins Daytona In previous years, the Trans Am cars had run in their own race, but for '68 the long distance enduros that attracted the GT40 Fords, Ferrari's and Porsche's was also the race for American 5.0-Liter sedans. The brand new Tunnel Port 302 engine not only lasted a 24-hour thrashing, it also finished ahead of the two year old Camaro Z28 with its DZ302 engine as well as three big block 427 Corvettes in the more powerful Sport class. The winning Mustang went 2,396.49 miles