NASCAR NEXTEL Cup Racecars

NASCAR NEXTEL Cup Racecar

What started first as strictly stock car racing grew into a race where racecars are customized and modified to cater to the driver's safety and to give him an edge over his competition. These customizations follow the rules set by NASCAR as to what defines a NASCAR NEXTEL Cup Racecar.

Basically, NASCAR NEXTEL Cup racecars are based on sedans types, which are American-built. These cars are only required to have the three standard stock parts namely, the hood, the roof and the trunk lid. All the rest, are left to the teams making the racecar.

These NASCAR NEXTEL Cup racecars weigh around 3,400 pounds with a wheelbase of 110 inches. Fuel to be used should have a 110 octane rating. Fuel tank capacity is at around 22 gallons. The top speed these racecars go is around 200 mph.

NASCAR NEXTEL Cup racecars use carburetors unlike what most cars are using today, which is the electronic fuel injection system. The engine will basically have 8 cylinders and will have 750 horsepower.

In terms of the size & shape of these NASCAR NEXTEL Cup racecars, templates are actually used to minimize shape variation, keeping these cars to look quite similar. The shapes of these racecars are so designed to make them aerodynamic. Less friction with the air will mean higher speeds in racing. Making the car aerodynamically efficient gives the driver an edge over the others and this helps in slicing thru the air ahead of your competition.

All engine parts require for accurate dimensions, and tolerances are set to the very minimum. This ensures all components fit very well as designed, thereby being able to get the most power out of the engine.

With cylinder head porting, the ports are reshaped to increase engine efficiency. This takes out the inherent flaws coming from the factory. In so doing, horsepower is increased. Cylinder head ports are critical as these allow air and fuel to travel through the engine's cylinders.

Finally, a NASCAR NEXTEL Cup racecar wouldn't be complete without the safety devices brought in to the picture. Seatbelts, roof flaps, window nets, a safe windshield made out of polycarbonate material, a fuel tank with a hard plastic inner layer, and more should be integrated to the design and assembly of a racecar.

Definitely with these high-end and powerful NASCAR NEXTEL Cup racecars, NASCAR fans are in for a treat with each race seen. As improvements and modifications continue in line with the quest for speed, these racecars will beyond doubt give a good show at each competition it races.