6/8/2017 · Starting in 1964 Porsche produced the engine blocks in cast aluminum. Though heavy, these were very stable and typically lasted the lifetime of the car, and beyond. These were the best for longevity and in fact Porsche brought the aluminum block back into production with the Carrera RS 3.0, Carrera 3.0, 76-77 930 Turbo, and of course the 911SC through the 3.2 Carrera of 1989.