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The 389 was the standard engine for the Pontiac Grand Prix and Pontiac Bonneville and installed in the Pontiac GTO through 1966. Beginning in 1961 the Pontiac V-8 (389 and 421) was dubbed the Trophy V-8 , due to its many victories in racing.
The designation 2+2 was borrowed from European sports car terminology, for a seating arrangement of two in front plus two in the rear. It was designated officially at Pontiac as a "regular performance" model, [2] a thoroughly confusing designation for a vehicle that was clearly intended to be to the Catalina platform what the GTO was to the A-body Lemans: the standard drivetrain was a 2-barrel ...
A single overhead camshaft (SOHC) design was introduced by Pontiac in the 1966 model year as the standard engine in the Tempest. Offered also in 1967, the 230 cu in (3.8 L) OHC 6 shared internal dimensions with the overhead valve Chevrolet straight-6 engine it was based on, [citation needed] but had unique cast iron block and head castings ...
The base engine with the 2+2 was now the 338-horsepower 421 four-barrel with the 353 horsepower (263 kW) Tri-Power or 376-horsepower 421 HO with Tri-Power available as options. [1] The 1966 full-sized Pontiacs received a minor facelift of the '65 body with new grilles and taillight treatment.
Engine options remained unchanged from the 1964 model year, with a 389 cu in (6.4 L), 333 hp unit being standard, equipped with a Carter AFB 4-barrel carburetor. A 421 cu in (6.9 L) engine was an optional upgrade. Both engines had choices of Tri-Power multi-carburetion setups and higher compression ratios. [15]
Codenamed XP-798, the 1966 Pontiac Banshee was a concept car inspired by European grand tourers, which evolved as a 4-seater version of a Corvette competitor study for Pontiac codenamed XP-778. [ 5 ] [ 6 ] It had a Pontiac 421 V8 , 4-wheel independent suspension and featured sliding hinged doors and hinged roof panels for easier rear seat access.
The Pontiac Star Chief is an automobile model that was manufactured by Pontiac between 1954 and 1966. It was Pontiac's top trim package on the Pontiac Chieftain, with later generations built on longer wheelbases, and serving as the foundation platform for the Pontiac Bonneville. The car was easily identified by three and four star-like trim ...
Introduced in 1963 on Pontiac's 389 and 421 cu in (6.4 and 6.9 L) drag racing engines, General Motors fitted it to the 1967 Z/28 before they used it on the L88 427 cu in (7.0 L) Corvette. It eliminated the production breaker-point ignition allowing greater spark energy and more stable ignition timing at all engine speeds including idle.