Starting with the 911S, the technicians developed a lightened car, and focused on increasing the capacity of the flat-six engine.
Out of these developments came the non-turbocharged Carrera RSR 2.8 created to compete in the 1973 GT Championship.
Right out of the box, the car showed huge potential, winning the 1973 Daytona 24 Hours at the hands of Peter Gregg and Hurley Haywood.
This was followed up by a win of the 12 Hours of Sebring, driven again by Gregg and Haywood, joined also by Dave Helmick.
Pen&ink and markers on gray archival stock
© Paul Chenard
It famously won the last official Targa Florio, driven by Herbert Müller and Gijs van Lennep.
With the record of important wins and high placings of the Carrera RSR, Porsche took the GT Championship.