Original vintage 1974 print advertisement for the Camel GT Challenge race at Ontatio Motor Speedway, featuring a Porsche 911.
Dimensions: 8.5 inches wide by 10.5 inches high
The 1976 Camel GT Challenge season was the 6th season of the IMSA GT Championship auto racing series. The series was for GTO and GTU class Grand tourer racing cars. It began on January 31, 1976, and ended on November 28, 1976, after fifteen rounds.
IMSA GT was a sports car racing series organized by International Motor Sports Association - races took place primarily in the United States and occasionally in Canada. The series was founded in 1969 by John and Peggy Bishop, and Bill France, Sr.
Racing began in 1971, and was originally aimed at two of FIA's stock car categories, running two classes each; the GT (Groups 3 and 4) and touring (Group 1 and 2) classes. The first race was held at Virginia International Raceway; it was an unexpected success, with both the drivers and the handful of spectators who attended.
The Porsche 911 is a two-door 2+2high performance rear-engine sports car introduced in September 1964 by Porsche AG of Stuttgart, Germany. It has a rear-mounted flat-six engine and originally a torsion bar suspension.
The 911 has been continuously enhanced through the years but the basic concept has remained unchanged. The engines were air-cooled until the introduction of the 996 series in 1998.
The 911 has been raced extensively by private and factory teams, in a variety of classes, and is among the most successful competition cars. In the mid-1970s, the naturally aspirated 911 Carrera RSR won world championship races including Targa Florio and the 24 Hours of Daytona.
The 911-derived 935 turbo also won the 24 Hours of Le Mans in 1979. Porsche won the World Championship for Makes in 1976, 1977, 1978, and 1979 with 911-derived models.
In a 1999 poll to determine the Car of the Century, the 911 was fifth. It is one of two in the top five that had remained continuously in production (the original Beetle remained in production until 2003). The one millionth example was manufactured in May 2017 and is in the company's permanent collection.