New for the 1965 Impala lineup was another special package, this one created for the four-door hardtop. Called the Caprice Custom Sedan option, this deal included a stiffened frame, revised suspension, black accents front and rear, and special trim and wheelcovers. The Caprice nameplate adorned a complete new model line beginning in 1966.
Still available for all Chevys, the famed 409 V-8 appeared briefly for one last run before being superseded midyear by the division's new Mk IV big-block V-8, a 396-cid beast that made 425 horses in top form in 1965. Beneath Caprice hoods, the optional 396 was rated at 325 horsepower. Both the 396 and its 427-cube Mk IV running mate were available for the 1966 Impala SS. A specially packaged SS 427 Impala debuted in 1967 and carried on alone after the base Super Sport was discontinued in 1968. Chevy offered its last full-sized SS 427 in 1969. The original Impala run ended in 1985.