General Challenger

  • Crankshafts

    In simple terms, a crankshaft is a shaft driven by a crank mechanism, consisting of a series of cranks and crankpins to which the connecting rods of an engine are attached. It is a mechanical part able to perform a conversion between reciprocating motion and rotational motion. In a reciprocating engine, it translates reciprocationg motion of the piston into rotational motion. In order to do the conversion between two motions, the crankshaft has "crank throws" or "crankpins"- additional...
  • Paddle shifters

    Paddle shifters, once exclusive to race cars and exotic sports cars, like the Ferrari F430, are now becoming commonplace on performance cars with automatic transmissions. This is because manual transmissions are going away faster than the landline telephone. Critics of automatics say that they take the passion and command out of driving. Paddle shifters, however, bring some of that joy and control back by allowing drivers to manually shift an automatic transmission with steering-wheel or...
  • Drag Racing Classes

    The NHRA has a huge variety of categories and eliminators. Class eligibility is based on requirements that include type of vehicle, engine size, vehicle weight, allowable modifications and aerodynamics. Top Fuel, Funny Car, Pro Stock, Top Alcohol Dragster, Top Alcohol Funny Car, Super Comp, Super Gas, Super Street and Pro Mod feature a single class of vehicle in heads-up competition. Comp, Super Stock, and Stock are made up of a variety of classes equalized by a handicap starting system....
  1. Shock Absorbers

    An automobile shock absorber is basically a hydraulic piston that absorbs and dissipates vibration using spring-loaded check valves and orifices to control the flow of oil. The first production hydraulic dampers, to act on the main leaf spring movement, were probably those based on an original 1908 concept by Maurice Houdaille. One design consideration, when designing or choosing a shock absorber, is where that energy will go. In most shock absorbers, energy is converted to heat inside the...
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    Limited Edition Challengers

    Over the past 13 years, Dodge has employed a marketing strategy of releasing an array of limited edition models. Here is the staggering lineup. 2008 SRT8 The inaugural edition of the Challenger was numbered, X of 6,462, and came equipped with the 425 hp. 6.1 Hemi engine with 425 lb.-ft. of torque. It also featured an Auto Stick Automatic, 20-inch Alcoa forged aluminum wheels, 245/45-20 Goodyear tires, Brembo brakes, etc. Color choices were Hemi Orange, Brilliant Black Crystal and Bright...
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    Chrysler Corporation in World War II

    Many are unaware of the vital role played by Chrysler Corporation in World War II. As Mopar enthusiasts, we should all be proud of its outstanding war record. In 1939, the U.S. military was laughable. The Army's own chief of staff, Gen. George C. Marshall, ranked it 19th in the world- one spot behind Portugal- in a report to the president. Roosevelt was about to change that- and America- forever. Decades of isolation and a global depression had created a nation unresponsive to the world...
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    Axle Ratios

    An axle ratio is the number of revolutions the output shaft or driveshaft needs to make in order to spin the axle one complete turn. The number is expressed in a ratio, which represents the number of teeth on the ring gear divided by the number of teeth on the pinion. For example, a vehicle with a 3.73:1 gear ratio means that the driveshaft will turn 3.73 times for each complete wheel spin. Many people simply refer to the axle ratio as 3.73, rather than express it as the ratio 3.73:1....
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    Intake Manifolds

    An intake manifold is the part of an engine that supplies the fuel/air mixture to the cylinders. Its primary function is to evenly distribute the combustion mixture (or just air in a direct injection engine) to each intake port in the cylinder head(s). Even distribution is important to optimize the efficiency and performance of the engine. It may also serve as a mount for the carburetor, throttle body, fuel injectors and other components. The design and orientation of the intake manifold is...
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    Car Salesman Tactics

    When buying a new or used car from a dealership, there are many pitfalls you must avoid. It must be remembered, you and the dealership have different objectives. You are trying to buy your vehicle as cheap as possible and it is trying to maximize its profits. Here are some of the common sales tactics that unscrupulous dealers may use: 1. The Hard Sell Buying a car is a big decision, so never make a purchase simply because you feel pressure from an overaggressive salesman. 2. Selling on...
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    Are Most Radar Detectors Useless?

    A radar detector is an electronic device that has been used by motorists, for decades, to detect if their speed is being monitored by police using a radar gun. It gave a driver sufficient warning to reduce his speed to avoid being ticketed for speeding. In a general sense, only emitting technologies, like Doppler radar, or LIDAR (pulsed laser light) can be detected. Visual speed estimating techniques, like ANPR or VASCAR cannot be detected in daytime. There are also no reports that piezo...
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    Seat Belt Technology

    A seat belt is a vehicle safety device designed to secure the driver or a passenger of a vehicle against harmful movement that may result during a collision or a sudden stop. A seat belt reduces the likelihood of death or serious injury in a traffic collision by reducing the force of secondary impacts with interior strike hazards, by keeping occupants positioned correctly for maximum effectiveness of the airbag (if equipped) and by preventing occupants being ejected from the vehicle in a...
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    Line Lock

    A line lock is a device that allows the front brakes to lock independently of the rear brakes, via a switch. The device is an electric solenoid that controls a valve which allows the brakes to be controlled individually. This allows the front brakes to be locked and the rear brakes to be open, and allows the driver to spin the rear wheels without wasting the rear brakes. This method is referred to as line lock and is popular among drag racers. Cars with manual transmissions allow drivers to...
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    Rear Window Louvers

    The rear window louvers that were original equipment on some 60s and 70s muscle cars were first and foremost, styling statements. They were part of an appearance package that was created to set these cars apart from lower performance plain Jane versions and were usually combined with features like stripes, spoilers and vinyl roofs. In addition, while they did not improve the aerodynamics of the vehicle, they created a dead air zone that helped traction by reducing rear lift. Some pony...
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    Windage Tray

    Most of us know about windage trays, but what is their function and what exactly is “windage?” Simply put, windage is a force created on an object by friction when there is relative movement between air and the object. Windage loss is the reduction in efficiency due to windage forces. As it pertains to internal combustion engines, windage is the power loss caused by the friction of the oil in the engine coming into non-lubrication contact with its internal moving parts. For the most part,...
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    Engine Control Unit (ECU)

    An engine control unit (ECU), also commonly called an engine control module (ECM), is the brain of your car. It is the main reason that we are now in the second era of muscle cars, despite restricting emission regulations. The ECU controls a series of actuators on an internal combustion engine to ensure optimal engine performance. It does this by reading values from a multitude of sensors within the engine bay, interpreting the data using multidimensional performance maps (called look-up...
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    Leasing vs. Buying

    How does the cost of leasing a Challenger compare to buying it, in terms of out-of-pocket costs? Or if you decide to buy a used Challenger, how much more will you save? And finally, what do those costs look like in the long run? These are important questions for buyers who want to carefully manage their automotive expenses over the years. It's hard to give one answer that covers all people and all situations. But the question can be divided into two parts: 1. An analysis of the hard costs...
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    Active Exhaust

    It’s a fact of life- cars make noise. Inexplicably, there are those in this world who build houses next to major freeways and then complain about the speed of the vehicles going past. There are those who build houses next to airports and complain about the excessive noise. Just as there are those people, there were those who decided that cars were too loud and needed to shut up! This presented car companies with a problem. Their engineers were telling them that for maximum efficiency,...
  15. Anti-Sway Bars

    An anti-roll bar (roll bar, anti-sway bar, sway bar, or stabilizer bar) is a part of many automobile suspensions that helps reduce body roll during fast cornering or over road irregularities. It connects opposite (left/right) wheels together through short lever arms linked by a torsion spring. A sway bar increases the suspension's roll stiffness- its resistance to roll in turns, independent of its spring rate in the vertical direction. The first stabilizer bar patent was awarded to Canadian...
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