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The Grand Prix was an all-new model for Pontiac in the 1962 model year as a performance-oriented personal luxury car. [3] Based on the Pontiac Catalina two-door hardtop, Pontiac included unique interior trim with bucket seats and a center console in the front to make the new model a lower-priced entry in the growing personal-luxury segment. [3]
Introduced in 1981, the 2.8 L (2,837 cc) LH7 was a High Output ("Z-code") version of the LE2 for the higher-performance X-cars like the Chevrolet Citation X-11 and higher-performance A-cars like the Pontiac 6000 STE. It retained a two-barrel carburetor and produced 135 hp (101 kW) and 165 lb⋅ft (224 N⋅m) for 1981 and 145 lb⋅ft (197 N⋅m ...
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.
1986.5 Pontiac Grand Prix 2+2 5.0 L (305 in 3) V8; The 1986.5 Grand Prix 2+2 had cosmetic changes which included a NASCAR-qualifying nose cone (also available through GM for installation on any 1981–1987 Grand Prix). There were 17 Grand Prix GTs offered by Myrtle Motors in New York which offered a slightly different look and had some ...
The bore was increased to 3.75 in (95.25 mm), and stroke increased to 3.4 in (86.4 mm), increasing displacement to 225.3 cu in (3.7 L; 3,692 cc). Since the engine was similar to the popular small-block Buick V8—now with a cast-iron block and displacement of 300 cu in (4.9 L), the engine was made cheaply at the same factory with much of the ...
The GTP trim level was added to the Grand Prix. It featured a supercharged 3.8 L V6 rated at 240 hp (179 kW; 243 PS) and 280 lb⋅ft (380 N⋅m) of torque. One design highlight of this generation Grand Prix is the sharing of the roof's sheet metal between both coupe and sedan models. In 1998 the Firebird was updated.
In 1985, the 4.3 L (262 cu in) was either equipped with throttle-body fuel injection (RPO LB4) or a Rochester Quadrajet four-barrel carburetor (RPO LB1). The Chevrolet Caprice, Chevrolet Monte Carlo, Chevrolet El Camino, Pontiac Parisienne, and Pontiac Grand Prix used the LB4 rated at 130 hp (97 kW).
Pontiac used the Roto Hydramatic from 1961-1964 on its shorter-wheelbase full-sized cars including the Catalina, Ventura and Grand Prix, but continued with the older four-speed Super Hydramatic design in the longer-wheelbase Star Chief and Bonneville models. It is believed Pontiac was made to take Roto in the short wheelbase models ( Catalina ...