Chevrolet twin cam

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Chevrolet twin cam

The Chevrolet Cosworth Vega is a subcompact four-passenger automobile produced by Chevrolet for the and model years. It is a limited-production version of the Chevrolet Vega , with higher performance. Chevrolet developed the car's all-aluminum inline-four cu in 1, cc engine, and British company Cosworth Engineering designed the DOHC cylinder head. Known at Cosworth Engineering as Project EA, a Cosworth racing engine based on the Vega aluminum block produced a reported hp kW and powered Chevron and Lola race cars to wins in the 2-liter class in their first outings. The ZO9 Cosworth Vega engine is a de-tuned version. Fuel injection would be needed to control emissions without power loss; also stronger internal parts to work with the existing block and the Cosworth head. A meager budget, and resistance from managers between Wade and DeLorean, meant low priority for the project, but once approved by DeLorean it could not be killed. In June, the prototype gave hp kW on dual Holley-Weber two-barrel carburetors. Approval of development aimed at U. In April, the design was frozen and two cars were built to accumulate mileage for EPA emission certification. The press was notified of the program and in August a Car and Driver feature alerted the public to an upcoming hp kW Cosworth Vega.

Pulaski, TN. To remedy this problem, GM rolled out this Twin Cam model.

In , Chevrolet launched a new model variant that came to market with the brand's first-ever four-valve-per-cylinder head, dual overhead camshafts, electronic fuel injection, a variable induction system to boost high-end performance and a stratospheric 7, RPM redline. As you'd expect, this mysterious car came with a four-wheel independent sport suspension and four-wheel disc brakes, too, but the car in question wasn't a Corvette, Camaro or Beretta. Purists will argue that it wasn't entirely a Chevrolet, either, because many of its parts came straight out of the Toyota parts bin. The mystery Chevrolet that few enthusiasts have ever heard of is the Chevrolet Nova Twin-Cam, a compact car that seemed to follow the same recipe served up by the Cosworth Vega of the mids: Take a compact car, stuff it full of cost-be-damned sophisticated four-cylinder engine, improve the handling and release it on an unsuspecting public. Prior to the launch of the Saturn brand, General Motors found itself struggling to compete with compact cars from foreign automakers such as Toyota, Nissan and Volkswagen. Using an existing but shuttered General Motors plant in Fremont, California, Chevrolet would build its fifth-generation Nova at the plant, learning all that Toyota could teach it about lean manufacturing. Toyota, on the other hand, gained a manufacturing site in North America, and would soon begin producing its Corolla platform mate to the Chevy Nova in the same facility.

When the original Corvette ZR-1 made its debut back in , the big story was its engine. Designed by Lotus, the ZR-1's all-aluminum 5. Interestingly, Chevy itself didn't build this engine, instead farming out production to Mercury Marine's MerCruiser division. MotorWeek visited MerCruiser's Oklahoma facility to get an inside look at how the LT5 was built in , shining light on this fascinating engine. Chevrolet chose MerCruiser partly because of its experience in working with aluminum, which was put to good use for the LT5. Using automated machines, around 95 percent of the LT5's drilling, boring and machining was completed at MerCruiser. All the tolerances of the LT5 were checked using automated machines too, since they were required to be within seven microns of Chevy's specs. Much of the final assembly was completed by hand, though, and each engine was put on the dyno for testing before being sent off to Chevy. MerCruiser's attention to detail was totally befitting of an engine like the LT5, which remains a legend to this day.

Chevrolet twin cam

In the beginning, it was a highly exotic bit of machinery, reserved for the fastest cars in the world; today, years after its birth, you'll find it under the hoods of even the most humble Korean transportation appliances. Even so, the very name of the twin-cam engine can still quicken the enthusiast's pulse, conjuring images of exhilarating drives on open, twisting roads, a ringing exhaust note trailing behind. The Peugeot L76 of marked the first successful automotive use of an engine with dual overhead camshafts. Has any engine technology ever given us so many decades' worth of excitement? In the s, it was the secret weapon behind Grand Prix victories; in the s and s, it was adopted by the world's most prestigious marques. The s saw pioneers beginning to put twin-cam engines under the hoods of affordable production cars, a trend that exploded in the s and '70s, when buyers of average means were seduced by the promise of free-revving, high-spirited fours and sixes. It seemed that every builder of affordable sports cars either had one to dangle in front of the enthusiasts, or was experimenting with one. Many twin-cams could excite with their looks alone, their dual cam covers hinting at the power that lay beneath. Despite its prominent place in automotive history, the precise origins of the twin-cam engine had long been disputed. Thanks to the work of the late automotive historian Griffith Borgeson, who spent three decades parting the fog of misinformation, conjecture, rumor and myth before writing the definitive The Classic Twin-Cam Engine in , it is now well established that the credit fully belongs to an engine designer named Ernest Henry.

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Chevrolet Trucks for Sale by Owner. It wasn't quick— came in 9. It rather surprised me at the time that Toyota would hop into bed with GM in this way. Even the basic interior did little to convey the car's semi-sporting mission. It would have been a cleaner transition to new models that would compete with the Avalon and Camry, and the Crown Vic probably did need a new name at the retail level. After decades of searching for this impossible to find car, I finally came across one for sale about miles from my home. I, the copyright holder of this work, hereby publish it under the following license:. UK Brands. What I was getting at is how a Toyota is treated at a GM dealer. Posted February 20, at PM.

The Chevrolet Cosworth Vega is a subcompact four-passenger automobile produced by Chevrolet for the and model years. It is a limited-production version of the Chevrolet Vega , with higher performance.

Discover more from Curbside Classic Subscribe now to keep reading and get access to the full archive. More than an engine. I suspect that it would come with Toyota Red coolant, as it is a Toyota. I have always had mixed feelings about these cars. Posted April 5, at PM. If you would like to participate, just answer the above four questions and submit one to three photos of your daily driver to milhousevanh at geemail. While Japanese models had started out as low priced alternatives to US models, Japanese manufacturers had moved their cars up market since , to increase the per car markup and maintain profits. It wasn't quick— came in 9. After a few years, enough customers owned the cars for word to get around that they were good. It allowed the Prizm to look a bit different then the Corolla due to the Corolla looking a bit more blocky. About Us. First thing I thought of. Hidden categories: Use American English from July All Wikipedia articles written in American English Articles with short description Short description matches Wikidata Articles needing additional references from December All articles needing additional references Articles needing additional references from July Commons category link from Wikidata Articles with Curlie links.