When the 1975 Corvette Lost Its Bite to Emission Rules
Post-1970s Clean Air Act and oil crises forced U.S. automakers to curb engine power; the 1975 Corvette produced only 165 hp from its V8, trailing earlier generations and rivals like the 1975 Trans Am, amid price hikes and GM political shifts (including Arkus‑Duntov's retirement). The era also introduced catalytic converters and the switch to unleaded fuel, plus lower compression ratios, all cutting performance. The malaise era hit numerous muscle cars before tech advances in the early 1980s—such as electronic fuel injection and improved engines—started restoring horsepower, a trend that culminated in later high‑performing models.
