Engine

• The 1963 Impala with the four-barrel carburetor, GM 327-cubic-inch engine produces 250 horsepower at 4,400 rpm, with 350 lb.-ft. of torque at 2,800 rpm. With a 10.5:1 compression ratio, its brake mean effective pressure is 161.5 pounds per square inch. The overhead valve motor has two valves per cylinder, and gas was fed from a 20-gallon tank.
  
  

Chassis, Dimensions

• The rear-wheel drive 1963 Impala had the option of a three or four-speed manual transmission or a Powerglide automatic. The car measures 210.5 inches long, 79.5 inches wide, 55.5 inches tall with a 119-inch wheelbase and six inches of ground clearance. The car's turning circle is 41 feet. The Impala four-door hardtop sedan carries a curb weight of 4,050 pounds.
  
  

Options

• The 1963 Impala's many options included vinyl roof, air conditioning, a tachometer and two front seat belts. It featured "idiot lights" for cold and hot engine conditions. General Motors also built the Impala with options such as power steering, power brakes, power windows and a six-way power seat, as well as a Positraction limited-slip differential and wire wheels.