General Challenger

  • 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...
  • Pro Stock Record Holders

    Pro Stock quarter mile drag racing times have dramatically decreased over the decades, since the class was established in 1970. This has been the result of tremendous advances in technology. To determine who is the fastest competitor, forty-nine years ago, NHRA instituted the Mello Yello Drag Racing Series. The champion is determined by a point system where points are given according to finishing placement and qualifying effort. The season is divided into two segments. After the first 18...
  • Phillips Head Screw

    The origin of the lowly Phillips screw is an interesting one. The history of metal fasteners go back to the 15th century. British toolmaker Joseph Whitworth devised the first screw in 1841 and American engineer produced the same in 1864. Screws were very hard to produce, however, and required the manufacture of a conical helix.. The brothers Job and William Wyatt found a way to produce a screw on a novel machine that first cut the slotted head, and then cut the helix. Though their business...
  • Dim to Bright- Headlight Technology

    From its humble origins, the headlight has evolved from what was considered an accessory of the 1900s to a necessity safety feature (half of all deadly accidents occur at night). Since its first generation, headlights have traveled a long way from a simple flame to a high-tech laser. Carbide Headlights The first vehicle headlamps were officially introduced during the 1880s and were based on acetylene and oil, similar to the old gas lamps. Originally developed for mining purposes, Carbide...
  1. Car Weight Terminology

    There are three different terms that are used concerning a car's weight- Gross Vehicle Weight Rating (GVWR), Gross Vehicle Weight (GVW) and Curb Weight. So how are they different? A car’s Gross Vehicle Weight Rating (GVWR) refers to the maximum poundage your car can weigh to operate safely and without harm to its components. Put simply, it's the maximum weight before everything breaks. Manufacturers calculate this number by testing the structural integrity of your car’s suspension...
  2. Rocker Arm Ratios

    Many have heard the term rocker arm ratio mentioned when talking about an engine. But, do you know what rocker-arm ratios are, and how different ratios can affect an engine’s performance? To start with, an engine is just a sophisticated air pump. The amount of power this “pump” delivers is directly affected by the amount of air ingested and expelled by the engine. Increase the amount of air flowing through the pump, and you can increase power output. While an engine is running, air is pulled...
  3. Auto-Stop/Start Technology

    Since the Obama Administration finalized standards in 2012, to encourage the automotive industry to reach a 54.5 miles per gallon corporate fuel economy average by 2025, manufacturers have been employing every means possible to squeeze another mile out of a gallon of gasoline. A combination of aerodynamics, weight savings, electrification, hybrid technologies and advanced engine management software has gone a long way, but it doesn’t take a rocket scientist to understand that you save a lot...
  4. Richard Petty- "The King"

    Richard Lee Petty is aptly named "The King." Over a racing career spanning 34 years, from 1958 to 1992, he was the first driver to win the NASCAR Cup Series championship seven times, while also winning a record 200 races, including the Daytona 500 a record seven times. Incredibly, he won a record 27 races (10 of them consecutively) in the 1967 season, alone. Statistically,he is the most accomplished driver in the history of the sport, and is one of the most respected figures in motor...
  5. The History of Car Antennas

    Automotive antennas have evolved since their introduction in the 1930s. Once tacked on as optional equipment, they are now designed into the car as an indispensable accessory. Several different approaches have been used to improve performance while making the antenna attractive, including embedded windshield versions and electric hide-away styles. The First Antennas In the 1930s, car antennas were incorporated into the radio body, as most stations were in the AM band, which required a...
  6. A Guide to Locking Lug Nuts

    Do you want to protect your wheels and tires from being stolen? The best security is locking lug nuts. These special wheel locks will help keep your wheels and tires safe even in dangerous neighborhoods or unlit parking lots. You’ll sleep better at night knowing that they will still be on your car when you wake up in the morning. Without a unique key, most thieves will be stopped in their tracks if they attempt to steal your rims and may move on to easier scores. Thieves are not only after...
  7. Camera Technology

    Not so long ago, drivers had only the view provided by the auto’s windows, as well as their own judgment, to drive their vehicles. However, no matter how experienced and skilled a driver was, there was always the risk to misjudge the distance between the car and curb while parking or not to notice other auto’s maneuver on the road, especially when it was in the blind zone. All these led to numerous accidents in which no one could prove whose fault it was. The good news is that if you own a...
  8. Phillips Head Screw

    The origin of the lowly Phillips screw is an interesting one. The history of metal fasteners go back to the 15th century. British toolmaker Joseph Whitworth devised the first screw in 1841 and American engineer produced the same in 1864. Screws were very hard to produce, however, and required the manufacture of a conical helix.. The brothers Job and William Wyatt found a way to produce a screw on a novel machine that first cut the slotted head, and then cut the helix. Though their business...
  9. Tstats and Engine Temperature

    As we all know, the main purpose of a thermostat (tstat) is to maintain your Challenger’s engine at the ideal operating temperature and help produce fewer emissions. First, let’s talk about how a tstat functions and then why racers install low temperature ones. Basically, the thermostat starts at a closed position when you start the engine to help it reach operating temperature. While the engine is running, the coolant temperature slowly rises, making the thermostat begin to open. The...
  10. Tim Kuniskis- A Real Car Guy

    Timothy (Tim) Kuniskis was named Dodge Brand and Interim Chrysler Brand Chief Executive Officer - Stellantis in January 2021. Prior to that, in June 2019, he was Head of Passenger Cars- North America in and Global Head of Alfa Romeo in February 2018. He has been a member of the Group Executive Council (GEC) since October 2015. In other words, he oversees the Alfa Romeo brand around the world while leading Chrysler and Dodge passenger car programs in the United States. Kuniskis has connected...
  11. Types of Tires

    Tires come in many treads, sizes and performance characteristics. Here is a primer on the basic car tire categories and some popular consumer choices. Extreme Performance Summer Hyper-focused on extreme dry grip, but gives up wet traction, comfort and tread life to get it. Not to be driven in near-freezing temperatures, in snow or on ice, or at high speeds in deep standing water, these specially tuned tires combine big-block tread designs with aggressive tread compounds and reinforced...
  12. 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...
  13. 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...
  14. Chrysler’s Amazing Turbine Car

    Chrysler has always been an innovator in the car industry. Nothing, however, captured the imagination of the driving public and the spirit of the 1960’s space-age as the turbine car. The Chrysler turbine car was produced by Chrysler, from 1963 to 1964. Its body was made by the Italian design studio Ghia, and Chrysler completed its assembly in Detroit. Surprisingly, the Chrysler turbine engine program, that produced the turbine car, began during the late 1930s and created multiple...
  15. A Look Back- The Rebirth of the Challenger

    The Challenger concept car, shown at the 2006 Detroit International Auto Show, was a big tease for Mopar fans. It was the answer to a hot rodders’ dream- the reincarnation of a 1970s Dodge muscle car! But, would it make it to production? See the 15:11 minute mark of the following video: Based on the success of the retro-inspired 2005 Mustang GT, Dodge looked at its parts bins and figured out how to use this stuff to create a modern-day Challenger. To accomplish this feat, Chrysler drew...
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