For 1971, the Bonneville was downgraded in the model hierarchy, as a new top line Grand Ville series was introduced. In effect, it replaced the discontinued Executive above the lower-priced Catalina. The Bonneville had new "Monocoque" styling and was offered in three body styles, a pillared four-door sedan, four-door hardtop sedan and two-door hardtop coupe. The standard engine for 1971-72 was a 455 cubic-inch V8 with two-barrel carburetor that was rated at 280 gross horsepower for 1971 optionally available was the four-barrel version of the 455 rated at 325 gross horsepower in 1971. The on-paper power ratings reflect the change in power measurement undertaken by the industry for 1972. 1971 was also the first year for Pontiac and other GM divisions to reduce compression ratios on all engines across the board to operate on lower-octane regular leaded, low-lead or unleaded gasoline, reflecting a corporate edict anticipating the introduction of catalytic converters in 1975 to help meet increasing stringent federal emission requirements. In mid-1971, a Turbo-Hydramatic transmission, power steering and power front-disc brakes became standard equipment on Bonneville and other full-sized Pontiacs. This is coming out of a high end collector's estate, and there are several others to choose from. Extra parts are available.
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1965 Pontiac Bonneville Convertible
..Been in Climate Controlled /
..Garage for over 35 Years
..Body Is Straight & Rock Solid
..No Engine was stolen several yeas ago
1959 Pontiac Bonneville Convertible
..Won Top First Place w/700 Cars Entered
..Won Best In Class at Pontiac Convention
..64,000 Original Miles
..Original 389 V8 Engine
1959 Pontiac Bonneville 2 door sportcoupe with very high end custom powdercoated frame, Corvette Fuel injected engine, auto trans, tri color interior and loads of new and used parts. Green Metallic.....