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Corvette Gets 7-liter Engine

You might think that 6 liters was enough toIn fact, titanium used to be an
make the Corvette two-seater fast enough, butaerospace-only material because it was so
not for the competition department lurkingexpensive, but it is now bein gused more in
inside GM. They wanted to be able to competeexotic cars and the heads of golf clubs,
head-to-head with the European supercars inhelping the lesser pros feel not so
the international endurance races for sportsoutclassed by Tiger Woods as they might with
cars.ordinary  drivers.
To do so, they took a leaf out of Ford'sYou will see that the Corvette 7 liter is
book. In the 1960s, when Ford found it couldintended for the race track by the fact that
not compete with the smaller Ferraris at Lethe engine has a dry sump lube system. A dry
Mans with the 4.2 (ex-Indy) or 4.7 litersump system prevents the oil in the oil pan
engines, they brought out their 7-liter mill.from slopping away from the pick-up on fast
And it was so much bigger than thecornering - the sort you can do only on a
competition that they won. So the guys behindtrack  - and thus damaging the main bearings.
the Corvette decided to produce a 7-liter
version of America's favorite and most famousInstead of staying in the oil pan, the oil is
sports  car.pumped out to a tank, and then pressure fed
from there directly to the engine bearings
By the way, the 7 liter Corvette more thanand other critical areas. Definitely a system
competes with the Dodge Viper SRT-10, whichfor  top  supercars.
could give the standard Corvette a bit of a
run for its money. Of course, this is notThe underpinnings of the car have also been
just any old engine. This is a very specialbeefed up with a new aluminum perimeter frame
version  of  its  GEN  IV  7.0  liter  V-8.which reduces weight. Further weight
reduction comes with a new magnesium engine
This 2006 Corvette is challenging for musclesub-frame. To ensure the car is stiff enough,
car of the year with no less than 500 bhp onit will be available only as a hardtop. The
tap at 6,200 rpm. Maximum torque from thisfront fenders and wheelarches are now carbon
mammoth engine is 475 lb ft at 4,800 rpm.fiber composite panels, which also reduce
This is bound to be a stunner with a topweight.
speed of about 185 mph and 0-60 in under 4.0
seconds. GM expects the quarter-mile be underBut  there's  more...
12  seconds.
To get all that power onto the road, and to
To give durability, the engine has beenget it to stop, bigger wheels, tires and
beefed up in a number of ways. First, thebrakes have been fitted. The front brake
connecting rods and inlet valves are now madediscs are now 13.9 inch diameter, and
of titanium - these weigh about half as much19×12 inch wide rims are used at the
as steel ones and are used in quite a numberback; front wheels are 18×9.5 inches.
of high-performance engines. Because of theSuch massive rear tires for a car with 50:50
low weight, the titanium parts put less loadweight distribution suggest that the car will
on other critical parts of the engine –have a tendency to oversteer - smoky drifts
the crankshaft, bearings and in this case thecould  be  the  order  of  the  day!
valve gear as well. The titanium valves also
allow  the  engine  to  rev  faster  safely.All-in-all, this is a really special car,
developed to compete with the best.



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