remote automatic chokes, with a bimetal coil spring mounted on the exhaust manifold, exposed to exhaust heat and operating a pushrod which rotated the choke lever on the carburetor. The export 2-barrel setup used an integral heat-tube style automatic choke: Air heated by the exhaust manifold was routed to a round bakelite housing on the carburetor air horn, which contained a bimetal spring acting directly on the choke lever. Super Six By the mid-1970s in the North American market, emission control regulations were reducing engine performance at the same time as safety regulations were making cars heavier. An increase in performance was required for the G-engine, so a 2-barrel setup was released for the 1976 model year. This was not the same as the export 2-barrel package; the intake manifold used a throttle-bored plenum rather than an open one, and had provisions for an EGR valve. The carburetor, a Carter BBD similar but not identical to the one used on Chrysler's V8 engine, used a standard Chrysler-style remote automatic choke. A exhaust headpipe was also provided, as well as 2-barrel-specific advance curves in the ignition distributor. This package, called "Super Six" by the marketing division, brought rated horsepower from and torque from , while improving throttle response and driveability while maintaining compliance with emission laws. Applications Passenger cars, trucks, vans 1980-1983 Chrysler Cordoba 1982-1984 Chrysler Fifth Avenue 1977-1981 Chrysler LeBaron 1962-1970 Chrysler Valiant 1975-1980 Dodge Aspen 1970-1971 Dodge Challenger 1969-1974 Dodge Charger 1965-1976 Dodge Coronet 1959-1976 Dodge Dart 1971-1972 Dodge Demon 1971-1988 Dodge Ram Van 1977-1983 Dodge Diplomat 1960-1962 Dodge Lancer 1980-1983 Dodge Mirada 1965-1967 Dodge Monaco (Canada) 1977-1978 Dodge Monaco 1969-1973 Dodge Polara 1981-1987 Dodge Ram 1978-1981 Dodge St. Regis 1964-1970 A-series truck and van 1960-1987 D-series truck and van 1961-1987 W-series 4WD truck 1964-1971 Plymouth Barracuda 1962-1967 Plymouth Belvedere 1969-1976 Plymouth Duster 1960-1973;1975-1978 Plymouth Fury 1980-1984 Plymouth Gran Fury 1971-1974 Plymouth Satellite 1955-1956;1962-1964 Plymouth Savoy 1960-1976 Plymouth Valiant 1975-1980 Plymouth Volaré References External links Newsreel: Valiant wins 1960 Compact Car race at Daytona Beach Slant 6 Straight-six engines Slant engines Gasoline engines by model