"In normal driving, with curves of the type you'll find on mountain highways, the car has a refreshing neutral steering that escapes beautifully from the normal understeer rut found in many compacts. Chevrolet and Pontiac divisions worked separately on small cars in the early and mid 1960s. 4) , model year 1975, version for North America California (U.S.) (up to September) manufactured by Chevrolet (USA) in United States ; 3-door hatchback body type; RWD (rear-wheel drive), manual 4-speed gearbox Understeer is much more pronounced negotiating 90 degree turns under maximum conditions."  Chevrolet told customers that if the throttle stuck open while driving, to turn off the ignition and brake the vehicle until it stopped. Louvered steel replaced the egg-crate plastic grille. Retired 1972 drag car. This is essentially how the car launched as a 1971 model. Transmissions are the three- and four-speed manual, five-speed manual with overdrive (1976–1977 option) and the three-speed automatic. Production ended with the 1977 model year. In 2013, Frank Markus of Motor Trend Classic said, "Overblown—The China Syndrome might have over hyped the TMI (Three-Mile Island) incident as bad press might have exaggerated the Vega's woes. "In spite of the understeer, for a wagon the handling is quite good." Sales peaked for the 1974 model year with 460,374 produced. Too many projects, one has to go! Clean title. Flooring is rubber on sedan and panel delivery with carpeting and additional sound insulation added on the other two models. Handling on the highway is a pleasant surprise. ", Car and Driver readers voted the Vega Best Economy Sedan in 1971, 1972 and 1973 in C&D's Annual Reader's Choice Poll.C&D: "In 1971, the Vega's first year on the market, it managed to unseat the incumbent import, breaking its eight year winning streak.". 400 1971-'72 COPO Yenko Stinger Vegas were sold (350 hatchbacks; 50 wagons). Axle shaft and wheel could then move outboard of quarter panel and allow vehicle to dropdown onto rear suspension. 1973 Chevrolet folder: back cover-Best Economy Sedan for '73-Vega. The 1971 and 1972 models are 169.7 inches (4,310 mm) long. It has far and away the best handling of anything in its class. The all-new Vega was powered by a four-cylinder engine, but what could Yenko undertake and keep his performance legacy alive while retaining the Vega's four-cylinder engine to appease the insurance companies. Considering the field of competition for this size vehicle, design objectives for the Vega engine were: 1. To remove the cam bolts required lots of careful work with a cutting torch and all new parts." In October 1971, General Motors handed management of Lordstown from Chevrolet and Fisher Body to General Motors Assembly Division (GMAD). This is quite an automobile." Consequent overheating distorted the open-deck block, allowing antifreeze to seep past the head gasket, which caused piston scuffing inside the cylinders. ", Car and Driver selected the '76 Cosworth Vega one of the "10 Best Collectable Cars" (1976-1986) in its fourth annual "Ten Best" issue in 1986, saying: "We're talking about historical significance here. Weight distribution is quoted at 53.2% front and 46.%8 rear. The 1973 emission control revisions reduced power from the optional engine by 5 bhp (3.7 kW), and its noise levels were lowered. "...It is appropriate that the final choice was a car that reflects Detroit's timely response to the people's needs instead of a copy writer's idea of what they should need. However, a part of the penalty was caused by the decision to use 35 lb of underbody compound on the top side of the floor stamping. Chevy Vega Wiki is a FANDOM Lifestyle Community. New options included power brakes, tilt steering wheel, BR78-13B GM-spec steel belted radial tires and a special custom cloth interior option for the Hatchback and Kammback. The A-390 alloy was suitable for faster production diecasting which made the Vega block less expensive to manufacture than other aluminum engines. He presented the program to GM's president in 1967. You'll recognize this special car by its distinctive red, white end blue accent stripes, white vinyl roof, white GT wheels, sport mirror and all-white interior with bright red accent carpeting. The roof panel is a double layer, with a drilled inner panel to cut noise. GM engineer Fred Kneisler maintains that too much emphasis had been put on overheating problems, the real culprits being brittle valve stem seals and too-thin piston plating. Monza front fender nameplates, and a two-spoke color keyed steering wheel with Monza emblem. The Vega program, code-named XP-887, was announced to the public in October 1968 by James M. Roche, General Motors Chairman of the Board. Engineering out the four-cylinder's block liners would save $8 — a substantial amount of money at the time. Dan Gurney, the first driver to win races at Formula One (1962), NASCAR (1963), and Indy Car (1967) combined, tested a Vega GT on a NASCAR oval. The rail car ramp/doors were opened and closed via forklift. With direction from Bill Mitchell, Haga's group took a clay model and redid the engineering version of the Vega, grafting a miniaturized Camaro front end and egg-crate grille and capped the rear of the sedan and hatchback models with recognizable Chevrolet tail lamps.The original approved clay model had small rectangular front parking lights below the bumper. 8. Other refinements improved it to 20 mpg‑US (12 L/100 km; 24 mpg‑imp), but brought apex seal failures and rotor-tip seal problems. The engine is prone to vibration, which is damped by large rubber engine mounts. The cylinder bores were rough and finish-honed conventionally to a 7-microinch finish then etched by a new (then) electro-chemical process. Corporate management made the decisions to enter the small car market and to develop the car itself. The Panel Express was discontinued at the end of the model year. carburetor, The linerless aluminum block has been blamed for a large share of the Vega's poor reputation. 7,500 were built through May. A new higher-capacity transmission mount with increased rubber volume for improved isolation supported the new, heavier manual transmissions. White-wall tires and full wheel covers were standard as were bumper rub strips. He authorized the Cosworth Vega prototype, and requested initiation of production. Fisher Body Division was very proud of its Elpo primering process, which should have prevented rust, but didn't. When the corporation started seriously talking about a U.S. built mini-car, Cole's version was chosen with the proposals from Chevy and Pontiac rejected, and Cole's new mini-car was given to Chevrolet to sell. Musser said, "This was the first vehicle where one person was in charge", and that his team "did the entire vehicle". Prophetic words indeed. Despite a series of recalls and design upgrades, the Vega's problems tarnished both its own as well as General Motors' reputation. Although the optional L-11 engine became a mainstream part of the Vega development program in December 1968, the Chevrolet engine group had an intense dislike for the tall iron cylinder head with its unusual tappet arrangement and side-flow "Heron" combustion chamber design that had been thrust on them from GM engineering staff, and set out to design their own.The design evolved rapidly as a "crossflow" aluminum cylinder head with a single centrally-mounted overhead camshaft (OHC) and roller rocker arms operating intake valves on one side and exhaust valves on the other, remarkably similar to the Ferrari V12 cylinder head design of that period; it was almost 4" lower than the Vega production head, was a lot lighter, had true "hemi" chambers with big valves, and made excellent power. Other refinements improved mileage to 20 mpg, but with the fuel breakthrough came related side-effect problems —apex seal failures, as well as a rotor tip-seal problem.By December 1973, it was clear the Wankel, now planned for the Monza 2+2, would not be ready for either production or emissions certification in time for the start of the 1975 model year, and after paying another $10 million against its rotary licence fees, the company announced the first postponement. Classified as a truck, the panel has 68 cubic feet of cargo space and a payload capacity of 650 lbs.Road & Track, January 1972 said, "Officially, it's a truck. Built to take it. Early Vegas had a few designed-in flaws, most minor, but an ill-fitting gas cap, ineffective windshield wipers, and a faulty choke drew fire from perennial GM foe Ralph Nader. But forget it if that's all you want. ", Aluminum block has 17 percent silicon content, free standing siamese cylinder walls. The energy absorption characteristics of the vehicle enabled engineers to simulate crash conditions for the vehicle at speeds up to 50 mph without catastrophic failure to the structure. ", Motor Trend awarded the Vega 1971 Car of the Year.MT: "The base Vega is a magnificent automobile without any options at all." Six v-grooves on the outside of the belt drive the water pump and fan.  The person I bought it from had started to set it up for Autocross parking lot racing. A performance level equal to the domestic compacts. The Sunbird wagon retained the Vega/Astre aluminum bumpers, unlike the Monza wagon, which featured a new front end and steel bumpers, but the 1979 model featured a revised horizontal styled grill. And since all other cars suffered the same inflationary rise, less expensive cars were in greater demand than those with higher prices which helped Vegas sell. Learn how and when to remove this template message, "Motor Trend Past Car of the Year Winners", "The Right Stuff: Does U.S. Industry Have It? All 2,061 Cosworth Vegas for the 1975 model year had black exteriors with black or white custom vinyl or black custom cloth interiors All featured gold accent striping, gold-colored aluminum wheels, gold "engine turned" dash bezel and gold-plated plaque with Cosworth ID and build number. [page needed], The chassis development engineers aimed for full-size American car ride qualities with European handling. 1972–1977 hp/torque ratings are SAE net Alle modellen aangedreven door een viercilinder lijnmotor met een lichtgewicht, aluminium motorblok. Chevrolet's advertising for the Vega included ads promoting awards won by the car. Supervised by the United States Auto Club, three pre-production 1976 hatchback coupes with manual transmissions and air conditioning were driven non-stop for 60,000 miles (97,000 km) in 60 days through the deserts of California and Nevada by nine drivers, covering a total of 180,000 miles (290,000 km). In addition, there was also a rotor tip-seal problem in the cast-iron configuration, especially after 15,000 miles. "The front suspension cam bolts would sometimes rust solidly in place, which prevented alignment adjustments. Molten aluminum was transported from Reynolds and Alcoa reduction plants to the foundry, inside thermos tank trucks. But at a cost review meeting the finance department cancelled the liners, as they would have added $1.14 per side, or $2.28 per car to the product cost. The 2-speed Powerglide was discontinued, leaving the 3-speed Turbo-hydramatic as the sole automatic transmission offering. This legacy would prove far more important than any direct impact the Vega would have on GM's profits. Ed Cole was chief engineer and Bill Mitchell, vice-president of design staff, was chief stylist. With the Vega nameplate canceled, the Monza 'S' was marketed as a price leader for the Chevy Monza line. The GM finance department insisted that the base transmission be a low-cost three-speed, with the traditional profit-generating four-speed as an extra-cost option. The engine features a stainless steel exhaust header and electronic fuel injection (EFI) – a Bendix system with pulse-time manifold injection, four injector valves, an electronic control unit (ECU), five independent sensors and two fuel pumps. The Vega came out well, scoring praise for its combination of performance and economy"; as well as its speed, comfort, quietness and better ride. 1973 chevy vega gt kammback wagon yenko stinger tribute californiacar. The rebadged wagon had the new Monza front end and grill and front and rear steel bumpers, front fender namplates and the Monza steering wheel with emblem. Below the cam carrier is a 16-valve cylinder head constructed of an aluminum alloy using sintered iron valve seats. Comfort and ride are all tied up together, consequently much of the comfort is a reflection of superb ride qualities." 1976 Chevrolet Brochure-'76 Vega Dura-built engine. Engine and rear axle assemblies positioned by hydraulic lifts with bodies overhead moved along the line at 30 feet (9.1 m) per minute. It sometimes seized the front suspension cam bolts, preventing alignment work, necessitating removal with a cutting torch and replacement by all-new parts. , In August 1975, Chevrolet conducted an endurance test of three Vegas powered by Dura-Built engines, advertised as a "60,000 miles in 60 days Durability Run". Vega Sport Coupé "Spirit of America" We have just received a special version of our sporty, and very popular, Vega Hatchback. Starting in 1976, extensive anti-rust improvements on the Vega's body included galvanized steel fenders and rocker panels and "four layer" fender protection with zinc coated and primed inner fenders and wheelwell protective mastic, zinc-rich pre-prime coating on inner doors, expandable sealer installed between rear quarter panel and wheel housing panel, and corrosion resistant header panel, grill and headlamp housings. The engine develops its maximum power at 5,600 rpm and is redlined at 6,500 rpm where the SOHC Vega engine peaks at 4,400 rpm and all is done at 5,000 rpm. 5,000 engines were built, but only 3,508 were used; GM disassembled about 500; the remaining engines were scrapped for a writeoff of $10K per engine.Car and Driver, October 1975 said, "The Cosworth Vega 16-valve four cylinder is the most sophisticated engine Detroit ever made. As the market changed, so did the car in development. The 1974 engines had a touch more power than '73, Torque was up noticeably but valve timing, camshaft lift and compression ratio were unchanged.  A 1990 Time article said the Vega was "a poorly engineered car notorious for rust and breakdowns. When first introduced, GM Board Chairman James Roche stated that there would be no major changes in the Vega for four years. The GT coupe is sporty, something most American compacts that have ever existed weren't.". H.E.I. Fisher Body and lacquer paint supplier DuPont, over one weekend, developed new paint chemistry and application specifics: Non-Aqueous Dispersion Lacquer (NAD). and others who praised the 2300 engine's simplicity, The 1972 Rochester DualJet two-barrel carburetor required an air pump for emission certification and was replaced in 1973 with a Holley-built 5210C progressive two-barrel carburetor. By 1974, the overheating and vibrations were a thing of the past and the noise had been reduced to an acceptable level. Later torque-arm rear suspension eliminated rear wheel hop under panic braking. At worst, the distortion compromised the head gasket. Cooling and durability of the Dura-Built 2.3-liter engine were improved. A new left hand mounted hood hold-open prop and cowl-mounted hood pop-up spring improved engine compartment servicability. Chevrolet Vega GT Hatchback Coupe 4-speed (man. The car still had no glove box. Handling on the track is quite another story though. The Monza S used the Vega hatchback body. 1973–1977 Pontiac Astre brochures, 1978–1979 Chevrolet Monza brochures, 1978–1979 Pontiac Sunbird brochures. The nine drivers were instructed to treat the cars as they would their own and use the air conditioning as desired. , Vibration and low-speed crash tests ensured the cars would not shift or suffer damage in transit. Five-speed manual and three-speed automatic were transmission options. New models introduced were the GT Estate Wagon, the Cabriolet Notchback with a half vinyl roof and opera windows similar to the Monza Towne Coupe, and a limited edition Nomad Wagon featuring restyled side windows. This page was last edited on 23 December 2020, at 06:31. This time Chevrolet won the guessing game. The granny test would have taken time, which the Vega's development engineers didn't really have. The L-11 engine featured a new Holley staged two-barrel carburetor. Apr 16, 2019 - Explore Chris E's board "Chevrolet Vega" on Pinterest. , As production approached 100 vehicles per hour problems arose in the paint shop. Final rating is 110 bhp. Had it gone to production, it would not have had the differential expansion head gasket problems that plagued the iron-head engine, and would have provided significantly higher performance than the optional L-11 engine. 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