375 hp (280 kW) in 1964. 1965 marked the introduction of the 425 hp (317 kW) 396 in³ (6.5 L) ("big block") V8 . Ultimately, this spelled the end for the Rochester fuel injection system, as the carbureted 396/425 hp option cost $292.70 to the fuel injected 327/375 hp's $538.00. Few buyers could justify $245 more for 50 hp (37 kW)