Not all the car makers succumbed to mid-70s “malaise”. Porsche resisted with all possible measures, and managed to keep improving the performance of their legendary 911 series, or at least keep from falling behind. For 1974, their solution was the same they had done twice already: increase engine displacement, now to 2.7 liters. Unfortunately, this generation of engines would go down in history as perhaps the most fragile one of the series, as the additional displacement and heat turned out to be too much for the magnesium block. But at the time, these were very compelling sports cars.