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The Pontiac GTO is a front-engine, rear-drive, two-door and four-passenger automobile manufactured and marketed by the Pontiac division of General Motors over four generations from 1963 until 1974 in the United States — with a fifth generation made by GM's Australian subsidiary, Holden, for the 2004 through 2006 model years.
It would later become known colloquially as the "Ram Air III", though Pontiac never called it by that name. A 400 cubic inch ram air equipped V8, it was an option on the 1969-70 GTO and Firebird Formula. For the 1969 and 1970 model years it was the standard engine in both the Firebird Trans Am and the GTO Judge.
Pontiac, or formally the Pontiac Motor Division of General Motors, was an American automobile brand owned, manufactured, and commercialized by General Motors.It was originally introduced as a companion make for GM's more expensive line of Oakland automobiles. [3]
The '63 326 Tempest/LeMans served as a testbed for the 389-powered 1964 GTO that would be based on a larger and more conventionally engineered Tempest introduced the following year. Motor Trend magazine named the Corvair as its 1960 Car of the Year, Tempest as 1961's Car of the Year, and the V6 Special received the award in 1962.
Built on the A-body platform shared with the Pontiac LeMans, the intended GTO body was re-badged and fitted with the top-level Grand Prix interior, and using the larger engine from the Grand Prix, Bonneville and Grand Ville. [3] The original Grand Am was introduced in the fall of 1972 as a 1973 model.
Few parts were interchangeable. The ST300, used with V-8 engines had additional clutches in the clutch packs, so they could handle the extra power of the larger engines. One of the clutch drums and/or apply piston in the ST300 was often used to 'beef-up' a Powerglide for high performance/racing uses.
Like all Canadian Pontiacs built from 1955 to 1970, Laurentians used full-size Chevrolet chassis, drive trains, and other parts, but using a body shell similar in style to, but not interchangeable with, the U.S. Catalina. For example, a 1964 Pontiac Laurentian looks like a Catalina, but has more in common with the Chevrolet Bel Air.
Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors.These transmissions mate a three-element turbine torque converter to a Simpson planetary geartrain, providing three forward speeds plus reverse.