General Challenger

  • Challenger- Concept to Production

    The planning and design of the Challenger concept car started in 2004. At that time, Chrysler’s Pacifica Studo was given the assignment to work with the exiting LX platform (i.e., Charger, Chrysler 300 and Magnum) to develop a 2-door, rear-wheel drive concept car. Many of the designers were musclecar guys and a new Challenger was proposed to be built around the 6.1 Hemi engine. There was a lot of conversation as to how much retro design features should be built into the car. Based on a...
  • Limited Slip Differentials

    A limited-slip differential (LSD), or “anti-spin” differential is a type of differential that allows the rear wheels on a vehicle to turn at different speeds when executing a turn. They are widely used in high performance and four-wheel-drive vehicles because they provide superior traction abilities. Various types of differentials can be classified as "anti-spin." These include limited slip, locking and spool differentials. Each performs differently on and off the road. Generally, only...
  • The Meaning of "Mopar"

    Short for the Chrysler Motor Parts Corporation, Mopar made its first appearance in the late 1920s and became its own brand in 1937. The name Mopar was created by a committee to market cans of "Chrysler Motor Parts" antifreeze. From there, the Mopar catalog expanded to include waxes, cleaners, filters, engine parts and more. Now, in its 81st year, Mopar encompasses the full line of Fiat Chrysler Automobiles parts, accessories, and customer service, including Fiat and Alfa Romeo brands...
  • Engine Dyno vs. Chassis Dyno

    What's the difference between running an engine on an engine-dyno, or, as installed in the car, on a chassis-dyno? Most chassis dynos extrapolate an engine's power and torque based on vehicle inertia. Many variables can affect chassis dyno results. It's a great convenient tuning aid, but you can't directly equate the reported torque and power numbers back to engine dyno results, or even the results obtained from two different chassis dynos. Operator experience is critical for obtaining...
  1. Evolution of Racing Stripes

    Racing stripes are usually a “must have” for owners of muscle cars. These stripes, originally called “go faster stripes,” first appeared on Cunningham race cars in 1951. Two parallel blue stripes ran from front to rear in the center of the white car body. Their main purpose was to help spectators identify the cars during races. They evolved from the traditional FIA registered U.S. Racing color of a white body and blue chassis, which dated from when racing cars had the chassis exposed. The...
  2. Evolution of Rear Spoilers

    A car spoiler is a stylish automobile accessory that can be mounted on the rear of most cars. There are many different styles of spoilers. The general shape consists of a slender slightly downward angled piece of metal, fiberglass, silicone or carbon fiber that is usually the width of the vehicle. Some seem to appear to mold into the vehicle and others stick out with two small ledges on both sides. The term "spoiler" is often mistakenly used interchangeably with "wing." An automotive wing...
  3. Exhaust Headers

    A component of any car or truck engine is an exhaust manifold for each bank of cylinders .In most production engines, the manifold is a cast iron assembly designed to collect the exhaust gas from two or more cylinders into one pipe. Engineers like cast iron because of its heat management properties and its superior longevity over any other type of exhaust outlet design. They also use the least metal, occupy less space and have the lowest production cost. Although these design restrictions...
  4. Forged vs. Cast Wheels

    When choosing aftermarket wheels for your Challenger, there is a considerable amount of choice. Car wheel technology has evolved considerably, over the years, from steel- once the preferred material- to lighter weight aluminum alloys. Among all types, you have the option of choosing between forged and cast wheels. In discussing the difference between the two, it is important to distinguish between the advantages and disadvantages of forging and casting. The strength of any metallic product...
  5. Fuel Delivery Systems

    A carburetor was the common method of fuel delivery for most US-made gasoline engines until the late 1980s, when fuel injection became the preferred method. This change was dictated by the requirements of catalytic converters and not due to an inherent inefficiency of carburation. Basically, a carburetor consists of an open pipe through which the air passes into the inlet manifold of the engine. The pipe is in the form of a venture- it narrows in section and then widens again, causing the...
  6. Hemi Heads

    In recent years, Dodge has produced four different Hemi heads. Here is a brief description of each. In 2003, the 5.7 Hemi received the first, followed in 2005 by the 6.1 hemi design. In 2009 and 2011 respectively, the 5.7 Hemi Eagle and 6.4 Hemi Apache head appeared along with Variable Valve Timing (VVT) and the larger 392-inch engine. As the engines got larger, the heads improved with the help of larger valve sizes and improved ports. As cams got bigger, the beehive springs got more...
  7. High Impact Paint

    In the late 60s/early 70s, Dodge was already offering some of the hottest cars of the muscle car era- awesome machines like the Hemi Challenger and 440 Six-Pack Super Bee. Designers, however, decided to rev up the cars’ visuals to match, creating a far-out assortment of vibrant exterior paint colors. These special colors (a $15 option) generated a big buzz in the showrooms and launched an industry trend. The color palettes used by all the automakers were opened up, giving paint designers...
  8. History and Applications of Carbon Fiber

    Carbon Fiber is a polymer and is sometimes known as graphite fiber. It is a very strong material that is also very lightweight. Although carbon fiber is five times stronger and twice as stiff as steel, it is lighter than steel; making it the ideal manufacturing material for many parts. These are just a few reasons why carbon fiber is favored by engineers and designers for manufacturing. Carbon fiber dates back to 1879, when Thomas Edison baked cotton threads or bamboo silvers at high...
  9. History of SRT

    Performance vehicles are a Chrysler tradition. In the 1950s, an elite team of Chrysler engineers set out to extract extreme horsepower from existing engines. The team created new manifolds featuring long-tube intake runners. The innovative design helped engines ingest more air, translating into improved performance. The new induction system was called “Ramcharger,” and the team behind the technology adopted that name. The Ramchargers’ new engine produced enormous amounts of power,...
  10. History of the Dodge Logo

    Dodge was founded in 1900 by Horace and John Dodge (The Dodge Brothers). It was initially known as the Dodge Brothers Company and used to sell bicycles, but then within two years it became a major supplier of axles, engines, and transmissions to the automobile industry. The company started by producing chassis and engines for the Ford Motor Company and Olds Motor Vehicle Company. However, with the stress and demands of the booming automobile industry, the brothers decided to tinker with the...
  11. Hood Pins

    Hood pins are used as a secondary restraint for the hood and are attached by a pin and plate drilled through the hood. They were originally made for the racetrack to keep hoods buttoned down at high speeds, but found their way onto muscle cars of the late 60s/early 70s. Hood pins (two per hood) were most prevalent on Dodge and Plymouth muscle cars of that era (e.g., Challengers, ‘Cudas, Road Runners, Daytonas, GTXs, Super Bees, etc.). They were, primarily, a styling element used to give a...
  12. How Do Navigation Systems Work?

    Getting lost while driving, or stopping at a gas station to ask for directions, has become a thing of the past. With GPS in your car’s navigation system, in the portable navigation device on your dashboard, or in your smartphone, it is easy to pull up a map and see where you are, or get directions to where you are going. GPS makes you safer, routes you around traffic delays and helps you find nearby services. GPS (Global Positioning System), a technology we now take for granted, started...
  13. How the EPA Tests Vehicles for Mileage

    Fuel economy for vehicles (city, highway and combined) is measured under controlled conditions in a laboratory using a series of tests specified by federal law.The results are displayed for the consumer on the "new car window sticker." Estimating MPG with Laboratory Tests In the laboratory, the vehicle's drive wheels are placed on a machine called a dynamometer. The "dyno" simulates the driving environment much like an exercise bike simulates cycling. Engineers adjust the amount of energy...
  14. how to wire up the solenoid when doing a 6.4l manifold to a 5.7l swap

    a lot of questions have been fielded about how to wire the msd window switch for the 6.4l short runner tuning valve. i sat down on a recent vacation and worked my way backwards to figure how to painlessly wire this system so it works close to what the factory intended. i have acess to all the service information from FCA being that i work for them. get the connector from chrysler for the solenoid. DON'T buy the circuit boss, it is confusing and unnescessary. the red wire from the window...
  15. Ignition Coils

    An ignition coil (also called a spark coil) is an induction coil in an automobile's ignition system. It transforms the battery's low voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel. Early gasoline internal combustion engines used a magneto ignition system, since vehicles did not have batteries. The voltage produced by a magneto was dependent on the speed of the engine, making starting difficult. A battery-operated coil, however,...
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