What are the different H-body models?
There are two major variations of the H-body, one based on the Chevrolet Vega and one based on the Chevrolet Monza. Vega sales began in 1971. The Pontiac Astre, almost a clone of the Vega except for minor cosmetic changes, was sold in Canada, then introduced to the US in 1975. The Vega was sold in hatchback, notchback, wagon, and panel wagon versions. All Vegas were sold with 1bbl or 2bbl 2.3L four cylinder aluminum-block OHC engines, except the DOHC Cosworth Vega sold in 1975 and 1976. The Vega 2300 won Motor Trend’s “Car of the Year” for 1971. Vega sales ended with the 1977 model year. The Monza was introduced in 1975. GM’s other brands also introduced their versions of the Monza: the Oldsmobile Starfire, the Buick Skyhawk, and the Pontiac Sunbird. The Monza, based on concept cars designed by Pininfarina (1971/1972 Ferrari GTC+4), was designed to use a two rotor Wankel engine, but that engine never reached production. Instead, the Monza appeared with either the Vega’s 4-cylinder or a
