Notes

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The obvious were an extended, more-pointed hood and a extra sharply Vee'd grille to match. A chief instance is the 1970 GSX, a bespoilered GS 455 hardtop with new "Stage I" engine tuning; it noticed solely 678 copies; the GS 455 convertible was little larger at 1416. Both had been again for '71 (GSX as an choice package deal) with bold black physique stripes and hood paint, special grille, chrome wheels, and fat tires. Buick's major mechanical development was an enormous 455 V-8. These might be powered by all the things from a 155-bhp 250-cid six to a giant-block 429-cid V-eight with 360-370 horsepower. The former provided six and V-eight Tudor and Fordor, along with enterprise and membership coupes. Some say it stemmed from the sport of Rounders that was performed in England and Wales during Tudor times. Bolstered by spiffy Luxus and Regal submodels (the latter made a separate sequence after '74), the midsize Centurys sold nicely via 1977, providing an vital "safety web" at occasions when inflation and rising gasoline costs despatched would-be huge-automobile patrons scurrying for thriftier alternatives. The year-outdated junior line displayed the anticipated minor trim shuffles; Gran Sports and Sportwagons remained separate sequence, as in '68. Trim packages created a bevy of models: base, 350 and Custom Skylarks, plus Sportwagons and Gran Sports.

The final of the 1968-vintage Skylarks appeared for 1971-72. They remained solid, good-wanting middleweights, though their engines were being emasculated by power-sapping emission-management units, which meant Gran Sports weren't so sizzling anymore. Nevertheless, naga2000 -dimension automobiles remained Buick's bread-and-butter by means of 1975, accounting for over forty % of whole division sales. Buick's final true muscle vehicles had been also 1970-72 fashions. All have been thirsty. The final 455-cid Electra, for instance, was good for only 8.7 mpg within the Environmental Protection Agency's city-gasoline-economic system scores. The GS choice, a final vestige of sport, vanished after 1975, but Buick tried to keep fanatics fascinated with a "Rallye" package deal providing bolstered entrance antiroll bar, a new rear bar, and heavy-obligation springs and shocks. Oddball styling and outsize heft will need to have contributed to Riviera's sagging fortunes in this period; by 1975, gross sales were less than half of what they'd been 5 years before. All employed a brand new-era A-physique with so-referred to as "Colonnade" styling that did away with pillarless coupes and sedans.

Intermediates had been next on the company slenderizing schedule, so a smaller Century bowed for 1978 together with a separate Regal series of private-luxurious coupes, all built on a brand new 108.1-inch-wheelbase A-physique. This hot-promoting line continued into 1970, however without Specials -- the smaller workaday models were now Skylarks -- and with Estate wagons in a separate collection. Estate wagons moved up to its 127-inch wheelbase. The next 12 months brought even fancier Electra Park Avenue models. This was claimed to provide even better journey and dealing with than the GS, and probably should have been normal to handle the size and weight of these beasts. The brand new subcompact Vega introduced for 1971 took over that end of the powertrain spectrum for Chevrolet, so Nova moved to a more responsive six-cylinder engine -- 250-cubic-inch and 145 horsepower -- as commonplace fare. Arriving for mid 'seventy three because the Apollo, it was just a rebadged clone of the 111-inch-wheelbase X-body Chevrolet Nova from 1968, with the same three body types (two- and four-door sedans and a hatchback two-door) plus, initially, the same 250-cid Chevy straight six as customary energy.

Rated at 110 bhp, and likewise customary power for the '75 Skylark, Century, and Regal, this can be a significant engine in years to return. Electras through 1979 relied on a normal Chevy-built 350 V-8; a brand new 403 with 185 bhp was optionally available, courtesy of Olds. The upmarket Electra remained a C-physique cousin to Olds Ninety-Eight and Cadillac de Ville. The latter remained huge upper-class two- and three-seat haulers battling the likes of Chrysler's Town & Country. Convertibles have been no extra (killed after '75), however two- and 4-door sedans have been provided in LeSabre, LeSabre Custom, Electra 225, and 225 Limited series. LeSabre nonetheless rode a 123-inch wheelbase, however so did Wildcat for the first time in four years. The entire bundle needed to be carryover, together with the wheelbase, together with carryover front-finish sheet-steel, cowl, entrance and rear bumpers, door lowers, quarter-panel internal structure, and so on. The Plymouth stylists could do something they wanted so long as they held these hardpoints. All full-sizers acquired new grilles, bumpers, and taillights; intermediates obtained longer hoods, bulkier decrease-physique contours, and different grilles for every series. It was a particular asset throughout the massive-automobile sales hunch touched off by the Middle East oil embargo late that 12 months, however intermediates would stay more important to Buick's overall well being.
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