The 2D was the first closed cockpit variant of the 2-series, designed for endurance racing in 1966. It won at 1000 km Nürburgring in 1966 with Phil Hill and Joakim Bonnier driving. It also competed in the 1966 24 Hours of Le Mans, withdrawing after 111 laps. The Chaparral 2D was equipped with a 327 cubic-inch displacement (5.3-liter) aluminum alloy Chevrolet engine producing 420 horsepower; the car weighed only 924 kg.