From 1968 to 1971, the 460 was rated at 365 gross hp. For 1972, the engine underwent a significant numeric decrease. Along with a decrease in the compression ratio (to 8.5:1) and modification of camshaft timing, the engine output was primarily influenced by the adoption of SAE net horsepower as a standard in North America (accounting for the power losses created by engine accessories and exhaust system). Initially reduced to 212 hp, the 460 saw its output change nearly on a yearly basis (to improve its fuel economy and emissions performance), dropping as low as 197 hp in 1977. Following its 1983 reintroduction, the 460 received fuel injection for 1988; while remaining at 225 hp, the update significantly increased torque output; after further updates in 1992 and 1994, the final production version of the 460 produced 245 hp and 400 lb-ft of torque.