Close. As the program progressed into development, the market changed, and so did the product: December, 1968 – Hatchback, wagon, and panel delivery styles added. The Astre Formula was introduced which included the handling package, chrome valve cover, three-piece spoiler, Formula T/A steering wheel and special decals. Safety regulations and crash tests resulted in the Vega being nearly 300 lb heavier than the original goal. Modular Construction Design reduced the number of joints and sealing operations resulting in stronger, tighter bodies, effectively contributed to vehicle quality and made possible a very high rate of production. Eudell Jackobson from GM engineering confirmed the problem involving the engine's valve-stem seals: "After the engine had been in production for a while, customers would go back to the dealer complaining about oil consumption... the mechanic would peer down the bore scope and observe cylinder scuffing. In February the "Spirit of America" limited edition hatchback was introduced featuring a white exterior, white vinyl roof, blue and red striping on body-sides, hood and rear-end panel, decal emblems on front fenders and rear panel, white "GT" wheels, A70-13 raised white-letter tires, a white custom vinyl interior and red accent color carpeting. 1973 models are 3 inches longer due to the front 5 mph bumper. Ed Cole, GM's executive vice-president of operating staffs, working on his own small-car project with corporate engineering and design staffs, presented the program to GM's president in 1967. A revised rear panel on Notchback and Hatchback models had larger single unit taillights and ventilation grills were eliminated from the trunk and hatch lids. Initially Powerglide automatic and Torque-Drive semi-automatic transmissions were optional. The Vega's front-engine, rear-wheel drive layout is the traditional one where the engine is located at the front of the vehicle and driven wheels are located at the rear. Could permit excessive end play and allow axle shaft to move inboard to point that "c" lock would disengage. It features improved coolant pathways for the aluminum-block, a redesigned cylinder head incorporating quieter hydraulic valve lifters (replacing the mechanical lifters), longer life valve stem seals, and a redesigned water pump, head gasket, and thermostat. Not as violent as the coupe, but disconcerting." 6. They have a job to do. We have automatic inspection of virtually every single engine part and so we know it's going to be right." "1976-'77 Dura-built engines had redesigned seals that reduced oil consumption by fifty percent. I like it; I like it very much. 1975 Chevrolet Vega For $19,995. Motor Trend nominated the 1971 Chevrolet Vega to the "Motor Trend Hall of Fame" announced in 1973. The casting process provided a uniform distribution of fine primary silicon particles approximately 0.001 inches in size. A relatively large displacement engine with good low speed torque was chosen. Weight distribution is quoted at 53.2% front and 46.%8 rear. Vibration and noise levels were reduced by a revised exhaust system and better driveline damping and the rear shock absorbers were revised. In mid 1971 the GT option package was introduced, available for the Hatchback and Kammback included the L-11 engine, the F-41 suspension (H.D.springs and shock absorbers, front and rear stabilizer bars, 6-inch-wide wheels and 70-series raised white-letter tires), GT fender emblems, black-finished grill and lower body sills, clear parking lamp lenses, chrome belt and lower moldings, full instrumentation, four-spoke sport steering wheel, adjustable driver's seat back, passenger-assist handle and a wood-grain dash bezel. 1971 Vega Panel ExpressPanels were only 2% of production.1973 Vega GT-Millionth Vega special edition 6,500 built May thru July 1973, Total Vega production was 2,010,547 including 3,508 Cosworth Vegas. This was a significant departure from the leaf spring suspension used in the Camaro and Chevy II Nova. A new left hand mounted hood hold-open prop and cowl-mounted hood pop-up spring improved engine compartment servicability. Service Station Management and Motor Service magazines in a 1972 survey, the Vega was voted –"Easiest to service, least mechanical problems and best overall in its class" by independent servicemen. The engineering team at Zirgo SoundLab's has specifically designed this kit for 71-77 Vega doors, roof, floor, firewall, and more. The A-390 alloy was suitable for faster production diecasting which made the Vega block less expensive to manufacture than other aluminum engines. The Chevy Vega was conceived in 1968 as a simple, low-cost transportation vehicle to utilize the newly-developed all-aluminum die-cast engine block technology. GM chose Cole's version over proposals from Chevrolet and Pontiac, and gave the car to Chevrolet to sell. Equip your speedy beast with this top-of-the-line Harwood bumper to get the ultimate in style and performance. Considering the field of competition for this size vehicle, design objectives for the Vega engine were: 1. The modelers were put to work on large, round lamps and DeLorean and Zollie came back later that day and approved the change. The five-speed manual with overdrive, and three-speed automatic transmissions optional. The Dura-built 140 engine received a pulse-air manifold injection system to meet the more strict 1977 Federal emission standards. It is generally acknowledged that this organizational arrangement made it possible to put out a totally new car in such a short time. After 2 days of hard driving over the mountains, across the high desert at 5,000 feet through Navajo and Hopi country and down into the 110-degree heat of Phoenix and the GM desert proving grounds, we had had about enough....In our 2-day stint the Vegas performed aptly, with only minor problems that could be ironed out before full production began." An iron engine could survive moderate overheating, but the Vega could not. 129,000 potential Vegas equipped with engine option L-11 (two-barrel carburetor) could experience exhaust system backfires of sufficient frequency and magnitude to weaken and rupture muffler. MotorMax 1:24 1974 Chevy Vega Metallic Green Street Racing Sweet Cherries. The cylinder block is an open deck design with siamesed free-standing linerless cylinder bores. Further development and upgrades continued throughout the car's seven year production run, addressing its engine and cost-related issues. Production began on June 26, 1970. The GT sport stripes option was changed — side stripping replaced the painted hood/deck stripes. A new higher-capacity transmission mount with increased rubber volume for improved isolation supported the new, heavier manual transmissions. In November 1970, GM paid $50 million for initial licenses to produce the Wankel rotary engine, and GM President Ed Cole projected its release in three years, initially targeted for an October 1973 introduction as a 1974 Vega option.Popular Science magazine in a May 1972 article stated, according to GM, the Wankel had so far proven more reliable than four, six, and eight-cylinder engines — GM-rotary engines were run up to 500,000 miles showing only minimal wear, and the engine's fewer moving parts assured its reliability. General Motors instituted a totally new management program to design the Vega: the car line management technique. 8 Cam Followers 1971-75 Chevy Vega 140 4cyl BLUE Screws (Fits: 1974 Chevrolet Vega) $42.99. The Pontiac Astre was introduced in the U.S. for the 1975 model year giving Pontiac dealers a needed fuel efficient subcompact. The GT coupe is sporty, something most American compacts that have ever existed weren't.". 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