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1968 GMC K2500 Super Custom 1972 GMC C1500 Sierra Grande. From 1967 to 1971, GMC Action-Line pickup trucks were offered in three trim lines. Deluxe served as a standard trim, an upgraded Custom trim was offered, with Super Custom serving as top-of-the-line trim. [21] For 1972, the trim line underwent a revision and was expanded from three to four.
After 1969, GM switched entirely to Chevrolet-produced engines for C/K pickup trucks. This generation marks the debut of the Chevrolet Cheyenne and GMC Sierra nameplates; introduced in 1971 and 1972, respectively, General Motors still uses both nameplates for full-size pickups in current production.
The GMC straight-6 engine was a series of gasoline-powered straight-six engines introduced in the 1939 model year by the GMC Trucks division of General Motors. Prior to the introduction of this new engine design GMC trucks had been powered by straight-six engines designed by the Buick , Pontiac and Oldsmobile divisions of GM.
The 305E was equipped with a two barrel carburetor and produced 170 hp (127 kW) gross at 4000 RPM and 263 lb⋅ft (357 N⋅m) gross at 1600 RPM in 1969. [12] The 305 was GMC's standard pickup truck and Suburban engine from 1960 to 1969. The 305A was standard in 1000–3500 series trucks in 1960–1961 and was dropped in 1962.
1955–1980 Pontiac V8 (also modified for GMC Truck models) 1958–1965 Chevrolet W (also referred to as "Turbo-Thrust") 1961–1980 Buick small block V8 (formed the basis of the 1961-1963 Oldsmobile 215 aluminum V8 ) (now better known as the Rover V8 and also the Buick-based "Dauntless V8" on Jeeps or the Repco V8 Formula One engine based on ...
1966-1970 GMC H6500 school bus (retired) In 1966, the GMC division moved its school bus chassis from the medium-duty C/K to the all new H6500 heavy truck. A forerunner of both the GMC Brigadier and GMC General, the H-series trucks featured an all-steel front fascia with a center-hinged "butterfly" hood for engine access. [1]
Prior to developing its own engines, smaller GMC trucks used the Pontiac V8 engine. They used the Pontiac 287-cubic-inch (4.7 L) engine for 1955 and 316-cubic-inch (5.2 L) engine in 1956, but advertised the engines as the "GMC 288" and "GMC 316". They used Pontiac's 347-cubic-inch (5.7 L) in 1957.
The GMC Astro (also known as the Chevrolet Titan) is a heavy-duty cabover truck that was manufactured by the GMC Truck and Coach Division of General Motors from the 1969 to 1987 model years. Succeeding the F/D-series "Crackerbox" cabovers, the Astro was marketed by Chevrolet as the Titan, serving as the largest cabover truck ever produced by ...