2010 Shelby GT500 receives an extra 40hp and 2 mpg in fuel economy

Article by Christian Andrei, on August 29, 2010

The latest 2010 Shelby GT500 receives an extra 40 horses and 30 ft-lb of torque above the retiring model and it will come with more efficient fuel consumption. Tests show that the new 2010 Shelby GT500 enhances 2 mpg in highway driving in contrast to the preceding version, with fuel consumption rated at 14 mpg city and 22 mpg highway.

The chief cause for these improvements is modifications to the top gears, which were made taller. Performance numbers of the 2010 Shelby GT500 were boosted by enhancements to the calibration of the supercharged and intercooled 5.4-liter DOHC V8 powerplant and refinements to the cold-air intake system. Featured in the engine calibration is a dual-knock sensor system instead of just one thereby enhancing engine efficiency further by more efficient use of fuel supplied.

Cold air is guaranteed to feed directly to the engine through the cold-air intake system, which in turn provides users the maximum potency possible. Engine speed hits the red line at 6250 revolutions per minute. The new model generates more torque at 3000rpm compared to the retiring model.

Part of the 2010 Shelby GT500 package is the gains made on cold-air induction system of the special 40th anniversary edition Shelby GT500KR. The focus of attention was the hood blanket to produce a tight seal in the region around the induction system and open air filter component.

Twin-disk clutch system on the 6-speed manual transmission were installed to handle the extra power in the 2010 Shelby GT500. Currently made of copper and fiberglass, the twin disks come with larger diameter, up from 215mm to 250mm, and are a lot stronger.

In a one disk environment, the torque output of the 2010 Shelby GT500 would necessitate a very large disk, but with the twin-disk configuration, however, the required surface area is met in a smaller package. Drivability is further improved with the two-disk setup since they lower inertia in contrast to the one-disk setup. Instead of floating, the middle disk comes with six straps that control the engagement of the clutch, thereby enhancing drivability, and gear clash and gear rattle noises are reduced by a dampener.

Consequently, there is a dramatic reduction of clutch effort, while clutch engagement becomes more seamless. With these modifications the car can now sprint from standstill to 60mph in just 4.3 seconds, and hit 100mph in 9.4. The six-speed gearbox was also improved to come with better highway fuel mileage.

Change made to the fifth gear is from .80 to .74, while the sixth gear is from .63 to .50. The final drive ration went from 3.31 to 3.55. With the additional power, torque and gear ratio, first through fourth gear are more performance-focused, although fifth and sixth gears provide fuel efficiency.

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