1963 CHEVROLET IMPALA HIGHLIGHTS · Custom Impala Hardtop · *409ci Big Block-era correct 340hp · 4-speed manual transmission · Suspension lowered w/ 5 spoke chrome wheels · Straight no-rust body · Custom paint and Custom Interior · Power steering · Tachometer · Side exhaust · Under glow lights · Custom taillights *The original engine has been replaced with Marine block #GM3857658, this 409 was the 340-hp with 10:1 compression, a single Carter four barrel, with a iron intake manifold #GM8844472 and a hydraulic camshaft. This engine has a Chevy four-speed transmission.