Corvette Gets 7-liter Engine
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Article by John Hartley
You may feel that six liters was sufficient to make the Corvette two-seater rapidly sufficient, but not for the competitors department lurking within GM. They desired to be ready to compete head-to-head with the European supercars in the international endurance races for sports vehicles.
To do so, they took a leaf out of Ford's book. In the 1960s, when Ford discovered it could not compete with the smaller Ferraris at Le Mans with the four.2 (ex-Indy) or four.7 liter engines, they brought out their 7-liter mill. And it was so significantly larger than the competition that they won. So the guys behind the Corvette decided to create a 7-liter version of America's preferred and most famous sports automobile.
By the way, the 7 liter Corvette much more than competes with the Dodge Viper SRT-10, which could give the standard Corvette a bit of a run for its money. Of course, this is not just any old engine. This is a very particular version of its GEN IV 7. liter V-eight.
This 2006 Corvette is challenging for muscle car of the year with no much less than 500 bhp on tap at six,200 rpm. Maximum torque from this mammoth engine is 475 lb ft at 4,800 rpm. This is bound to be a stunner with a top speed of about 185 mph and -60 in underneath four. seconds. GM expects the quarter-mile be under 12 seconds.
To give durability, the engine has been beefed up in a amount of approaches. Very first, the connecting rods and inlet valves are now made of titanium - these weigh about half as much as steel ones and are utilised in very a amount of high-efficiency engines. Since of the low weight, the titanium components put much less load on other essential elements of the engine - the crankshaft, bearings and in this case the valve gear as well. The titanium valves also let the engine to rev faster safely.
In reality, titanium utilised to be an aerospace-only material due to the fact it was so costly, but it is now bein gused more in exotic vehicles and the heads of golf clubs, assisting the lesser pros really feel not so outclassed by Tiger Woods as they may well with ordinary drivers.
You will see that the Corvette 7 liter is intended for the race track by the fact that the engine has a dry sump lube technique. A dry sump system prevents the oil in the oil pan from slopping away from the pick-up on rapidly cornering - the sort you can do only on a track - and thus damaging the main bearings.
Instead of staying in the oil pan, the oil is pumped out to a tank, and then pressure fed from there directly to the engine bearings and other vital places. Certainly a system for leading supercars.
The underpinnings of the car have also been beefed up with a new aluminum perimeter frame which reduces weight. Further weight reduction comes with a new magnesium engine sub-frame. To make certain the auto is stiff enough, it will be available only as a hardtop. The front fenders and wheelarches are now carbon fiber composite panels, which also minimize weight.
But there's far more...
To get all that power onto the road, and to get it to stop, bigger wheels, tires and brakes have been fitted. The front brake discs are now 13.9 inch diameter, and 19 x 12 inch wide rims are employed at the back front wheels are 18 x 9.five inches. Such massive rear tires for a auto with 50:50 weight distribution recommend that the auto will have a tendency to oversteer - smoky drifts could be the order of the day!
All-in-all, this is a truly specific vehicle, created to compete with the greatest.
About the Author
John Hartley is editor of http://www.quickly-autos.com, an online magazine devoted to fast vehicles and supercars. He has written from several of the world's best car magazines, and has written several books about cars and the car sector.
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