Image credits: © Chevrolet. GM Corp
2014 Chevrolet Camaro Z28
2014 Camaro Z/28 the Most Track-capable Camaro Ever
Chevrolet today introduced the restyled 2014 Camaro line at the New York Auto Show, including the return of the Z/28, the most iconic model in Camaro history.
The 2014 Camaro models feature a revised exterior design that integrates high-performance aerodynamics for more efficient cooling and stability at high speeds. The new Camaro Z/28 also features a full aerodynamics package that creates downforce at speed, which helps make it the most track-capable offering in Camaro's history.
'As the ultimate track-capable Camaro, this car restores the mission of the original Z/28, and serves as a testament to the expertise of Chevrolet as the best-selling brand of performance cars,' said Mark Reuss, president, GM North America. 'The build sheet is the wish list of any racer: lightweight, high-revving, dry-sump LS7 engine; carbon-ceramic brakes; integrated coolers for track use; true aerodynamic downforce, and a significant reduction in curb weight. This car could only come from Chevrolet, and could only be called the Z/28.'
The first Camaro Z/28 was introduced in 1967, created to compete in the Sports Car Club of America's Trans-Am 2 class. It featured a smaller, lighter, 302-cubic-inch V-8 for improved weight balance, as well as quick-ratio steering and a heavy-duty suspension for track use. In keeping with its road-racing focus, the 1967 Camaro Z/28 was not available with an automatic transmission or air conditioning.
While the new Camaro Z/28 is not intended to compete in a specific race series, it is solely focused on track capability. In initial testing, the Camaro Z/28 is three seconds faster per lap than the Camaro ZL1. That extra speed comes from three areas:
• Increased grip: The Z/28 is capable of 1.05 g in cornering acceleration, due to comprehensive chassis revisions
• Increased stopping power: the Z/28 features Brembo carbon-ceramic brakes
capable of 1.5 g in deceleration, and consistent brake feel, lap after lap
• Reduced curb weight: The naturally aspirated Z/28 weighs 300 pounds less than the supercharged Camaro ZL1, with changes ranging from lightweight wheels to thinner rear-window glass
Like the original, the 2014 Camaro Z/28 is offered only with a manual transmission. (posted on conceptcarz.com)
In a nod to modern convenience, air-conditioning is available, but only as an option.
'We set out to make the fastest road-racing Camaro possible that was still street-legal,' said Al Oppenheiser, Camaro chief engineer. 'While the Camaro ZL1 offers exceptional performance on the street, the drag strip, and the track, the Z/28 is entirely focused on the track performance. The Z/28 will be too track-focused for most drivers, but offers road-racers one of the most capable track cars ever offered from an automaker.'
The new 2014 Camaro line will arrive at Chevrolet dealers later in 2013. The Camaro Z/28 is expected to be appearing at track events across the Únited States in spring 2014.High-performance aerodynamics highlight changes for 2014 Camaro
The 2014 Camaro represents the most significant redesign since the introduction of the fifth-generation Camaro as a concept car in 2006.
'The 2014 Camaro is our opportunity to apply what we have learned listening to our customers, and our continuing development of high-performance models,' said Tom Peters, Camaro exterior design director. 'We look for solutions that are both functional and beautiful so that the result is genuine Chevrolet – simple, powerful, honest, and more than expected.'
Compared to the previous model, the design represents a strong visual change front and rear, resulting in a wider, lower, more contemporary appearance. The front fascia features a wider lower opening, and a narrower upper opening that also updates the appearance of the iconic 'halo ring' HID headlamps on the Camaro RS package. The functional hood vent on the Camaro SS helps reduce heat and aerodynamic lift. Moving to the rear, the sculptural decklid, horizontal lamps and diffuser complete the powerful statement.
The Camaro Z/28 also features a full aerodynamic package designed to produce downforce at track speeds. At the front, the Z/28 features a large splitter, connected to an underbody panel that further reduces lift. In profile, the Z/28 features fender flares over the front and rear wheels, as well as extended rocker panels that contribute to aerodynamic stability. An aggressive rear spoiler and functional diffuser complete the aerodynamic package.
On the interior, the Camaro Z/28 features trim in a distinctive, matte-metallic finish named Octane, the ZL1 flat-bottomed steering wheel, and standard Recaro seats with microfiber suede inserts. The new seats (also available on the coupe versions of the SS and ZL1 models), feature aggressive bolsters for high-performance driving, as well as seat cutouts inspired by the five-point harnesses found on racing seats. To save weight, both front seats incorporate manual adjustment.
The rear seats of the Z/28 have also been modified for weight reduction. A total of nine pounds (four kilograms) was saved by eliminating the seat-back pass through, as well as using high-density foam in place of the rigid structure of the seat back and steel mesh of the seat bottom.
'Únlike the Ford Mustang Boss 302, we felt it was important to keep the 2+2 configuration of the Camaro Z/28 as Chevrolet already has a world-class two-seat sports car in the Corvette,' said Oppenheiser. 'By modifying the construction of the rear seat, we were able to reduce the overall weight of the Z/28 while still preserving the flexibility of 2+2 seating.'7.0L, LS7 the heart of the Camaro Z/28's track-capable performance
Like the original, the new Camaro Z/28 forgoes ultimate horsepower and torque for improved weight balance and track performance.
In 1967, the most-powerful engine available in a factory Camaro was a 396 cid V-8 with 375 horsepower. To prepare the Camaro Z/28 for road racing, engineers specified a lighter, 302 cid V-8, officially rated at 290 horsepower. While the 302 was not the choice for drag racers, it proved ideal for sports-car racing.
Today, the most-powerful engine offered is the Camaro ZL1's supercharged 6.2L LSA, which delivers 580 horsepower. The heart of the 2014 Camaro Z/28 is the lighter, naturally aspirated 7.0L LS7 first introduced in the Corvette Z06.
'The LS7 is ideal for road racing because it delivers amazing performance in a compact, lightweight package,' said Jordan Lee, Small Block chief engineer and program manager. 'The broad torque curve and high redline of the LS7 mean fewer shifts are required for each lap, while the lightweight design improves the front-to-rear weight balance for better handling.'
Co-developed with Corvette Racing, the hand-assembled 7.0L (427 cid) V-8 uses a number of high-performance components, including:
• Titanium intake valves and connecting rods, and sodium-filled exhaust valves
• CNC-ported aluminum cylinder heads
• Forged-steel crankshaft and main bearing caps
• High-lift camshaft
• Hydroformed exhaust headers
• 11.0:1 compression ratio, and a 7,000 rpm redline.
• 10.5-quart, dry-sump oiling system
For the Camaro Z/28, the LS7 features unique induction and exhaust systems, and delivers at least 500 horsepower (373 kW) and 470 lb-ft of torque (637 Nm).
The racing-style, cold-air induction system and large K&N air filter provide maximum air flow.
The standard dual mode exhaust system and larger-diameter pipes enable improved air flow. By bypassing the mufflers during acceleration, the system increases both the torque and sound generated by the LS7 engine.
The Camaro Z/28 is exclusively offered with a Tremec TR6060 manual transmission. (posted on conceptcarz.com)
The six-speed features close-ratio gearing and 3.91:1 final drive ratio, both optimized for the power characteristics of the LS7.
Power is distributed to the rear wheels via a limited-slip differential featuring a helical gear set, rather than traditional clutch packs. The new design enables the driver to apply more power and get through corners faster, by continuously adjusting the torque bias to maximize available traction.
The differential works in unison with Chevrolet's proprietary Performance Traction Management system, which allows drivers to adjust the level of throttle and brake intervention to match their capability and driving environment.
Únlike some competitors' 'track package' offerings, the Camaro Z/28 makes standard all the cooling systems required for track use. This includes the dry-sump oiling system for the LS7, which is connected to an integral liquid-to-liquid cooling system for engine oil.
A second liquid-to-liquid system provides cooling for the transmission and differential. This system pumps overcooled transmission fluid to a heat exchanger in the rear differential before traveling to the transmission. (posted on conceptcarz.com)
This reduces differential temperatures as much as 100 degrees F.Camaro Z/28 chassis delivers 1.05 g in cornering grip
The singular focus of the Camaro Z/28 is most evident in the chassis, where the most has been made of every component for track use, from the ultra-high performance tires to race-proven dampers.
'We used the very best components in the industry to deliver uncompromised performance, lap after lap,' said Mark Stielow, Camaro Z/28 engineering manager. 'We made nearly 200 changes to improve the track performance, which cumulatively make the Z/28 capable of 1.05 g in cornering. For perspective, with all other things, equal increasing maximum grip from 1 to 1.05 g can cut up to four seconds per lap.'
The Camaro Z/28 is the one of the first production cars fitted with race-proven, spool-valve dampers. Compared to a conventional damper that offers only two-way tuning for bump and rebound, a spool-valve damper allows four-way adjustment to precisely tune both bump and rebound settings for high-speed and low-speed wheel motions. The wider tuning range allowed engineers to dramatically increase the damper stiffness on the Camaro Z/28 without a significant change in ride quality. Additional chassis changes include stiffer string rates and suspension bushings for improved cornering response.
The Camaro Z/28 features 19-inch diameter wheels and tires, which reduce unsprung weight by 42 pounds (19 kilograms) per car compared to the 20-inch wheels standard on Camaro SS and ZL1. In addition, the smaller diameter wheels lower the center of gravity by 33 millimeters, further improving handling.
At all four corners, the lightweight, forged aluminum wheels are wrapped in massive 305/30ZR19 tires. This is the first production application of ultra-high performance Pirelli PZero Trofeo R tires, and believed to be the widest front tire on any production car.
To fully exploit the grip of the Pirelli tires, the Camaro Z/28 also features Brembo Carbon Ceramic Matrix™ rotors and fixed, monoblock calipers. The large 394 x 36 mm front rotors are paired with six-piston calipers, while the 390 x 32 mm rear rotors are paired four-piston calipers. Compared to similar-size, two-piece steel rotors, the lightweight carbon discs save 28 pounds (12.5 kilograms) per car.
The combination of tire grip and braking power enable the Camaro Z/28 to achieve up to 1.5 g in deceleration. With standard front brake cooling ducts, the Z/28 is also capable of continuous track use unmatched brake feel, lap after lap.
'What makes the Z/28 so addictive is it inspires confidence through every section on the track,' said Stielow. 'The incredible, balanced performance helps you carry much more speed through every corner: the brakes are so good you can adjust your braking points later and later; the grip and suspension damping allows you to carry more speed through the apex; and then the limited slip allows you to make the most of the LS7 as you power out of the corner.'
Extensive lightweighting saved 300 pounds over the Camaro ZL1
To optimize the track performance of the Camaro Z/28, the engineering team subjected it to an intensive lightweighting program, saving 100 pounds (45 kilograms) compared to the naturally aspirated Camaro SS and 300 pounds (136 kilograms) to the supercharged Camaro ZL1.
'We looked at every subsystem for opportunities to save weight,' said Oppenheiser. 'Our goal was to get rid of everything that didn't make the car faster, and keep only what was required by law. For example, we wanted to eliminate the audio system completely, but we had to keep a single speaker for the seat-belt chime to meet safety requirements.'Other examples of weight savings include:
• Eliminated the tire-inflator kit, except for Rhode Island and New Hampshire, where it is required by law
• Removed interior sound deadener, and carpeting from the trunk
• Replaced the standard LN4 battery with a smaller, lightweight, LN3 battery
• Specified thinner, 3.2-mm glass for the rear window, compared to 3.5-mm glass on the standard Camaro
• HID headlamps and foglights are not available
• Air conditioning is only available as a stand-alone option
'The team was so fanatical about saving weight, we even stripped the unused wiring out of the harness when we eliminated the fog lights, speakers, and air conditioning,' said Oppenheiser. 'Every ounce saved contributed to making this the most track-capable Camaro we have ever built, and a worthy successor to the Z/28 name.'Source - Chevrolet
2014 CAMARO Z/28 POWERED BY RACING-PROVEN LS7 V-8
The racing-proven LS7 7.0L V-8 powers the all-new 2014 Camaro Z/28 – the most track-focused production model in the car's history. It's matched with a TREMEC TR6060 six-speed manual transmission with unique gearing tailored to the LS7's performance characteristics for optimal track performance.
The Z/28 engine is adapted from the LS7 used in the C6 Corvette Z06, which was developed in conjunction with Corvette Racing. It is rated at an estimated 500 horsepower (373 kW) and 470 lb.-ft. of torque (637 Nm) in the new Camaro Z/28, with a maximum engine speed of 7,100 rpm – a broad rpm range that contributes to higher power and allows the driver to hold gears longer between shifts on the track. That helps keep the engine at peak power for quicker lap times.
'The LS7 lives on in the all-new Z/28, extending a performance legacy while delivering great power density in a lightweight package to give this exciting new Camaro a great feeling of control and balance,' said John Rydzewski, assistant chief engineer for small-block engines. 'It introduced exotic materials and racing-influenced solutions that keep it at the forefront of high-performance technology.'
The LS7 is the most powerful naturally aspirated production engine ever from General Motors and, upon its launch in late 2005, was the first GM engine to receive SAE-certified power ratings.
'In the Camaro lineup, it complements a range of great V-8 choices, starting with the 426-horsepower LS3 in the Camaro SS and ending with the supercharged LSA rated at 580 horsepower in the Camaro ZL1,' said Rydzewski. 'The LS7's low mass and high rpm capability make it the perfect choice for the lightweight, track-capable Z/28, exemplifying all the strengths and attributes of the small-block architecture.'
Hand-assembled at GM's Performance Build Center, in Wixom, Mich., the LS7 shares the basic Gen IV V-8 architecture as the Camaro SS's 6.2L LS3 engine, but it uses a unique cylinder block casting with pressed-in steel cylinder liners to accommodate the engine's larger diameter, 104.8mm cylinder bores – with deck-plate boring and honing for optimized bore geometry. It also uses a dry-sump oiling system to ensure full lubrication during the 1.05-g cornering loads the Z/28 is capable of producing.
Internally, the LS7's reciprocating components use racing-derived lightweight technology, including titanium connecting rods and intake valves, to boost horsepower and rpm capability – and reduce overall engine mass. The titanium connecting rods provide perhaps the most direct link from the racetrack. They weigh just 464 grams apiece, almost 30 percent less than the rods in the LS3. Besides being lightweight, which enhances high-rpm performance and rpm range, titanium makes the rods extremely durable.Additional engine highlight include:
-Forged steel main bearing caps
-Forged steel crankshaft
-Titanium connecting rods with 101.6-mm stroke
-Aluminum flat-top pistons
-Racing-derived CNC-ported aluminum cylinder heads with titanium intake valves and sodium-filled exhaust valves
-Hydroformed 'tri-Y' exhaust manifolds
-High-capacity, liquid-to-liquid oil cooling system
-Únique cold-air induction system with low-restriction K&N air filter
-Únique engine cover with 'Camaro 427' identification.
The LS7 exhaust system for the Z/28 is unique and features a tri-Y header design to take advantage of the V-8's firing order. Primary pipe pairings join cylinders one and five, then three and seven on the left bank, with cylinders two and four and six and eight paired on the right bank. At each bank, the primary pairings collect into a secondary Y, delivering a combination of pulse separation of adjacent firing cylinders and improved scavenging for the engine's firing order of 1-8-7-2-6-5-4-3. A dual-mode exhaust system and large, three-inch-diameter pipes complement the manifolds' tuning and low restriction. The optimized header and exhaust system improves torque and sound quality from the LS7 engine.High-flow heads
The LS7's CNC-ported aluminum cylinder heads are designed to meet the high airflow demands of the engine's 7.0-liter displacement, as it ingests more than 100 cubic feet more air per minute than the LS3 V-8 – a nearly 20-percent increase in airflow. To process that airflow capability, a hydraulic roller camshaft with 15mm intake and exhaust valve lift is used to allow plenty of air to circulate in and out of the engine.
To ensure optimal, uninterrupted airflow, the LS7's heads have straight, tunnel-like intake runners. Very large by production-vehicle standards – even racing standards – they are designed to maintain fast airflow velocity, providing excellent torque at low rpm and exhilarating horsepower at high rpm.
The heads feature 70cc combustion chambers that are fed by 56mm titanium intake valves, which are larger yet lighter than the valves in the LS3. They are partnered with 41mm sodium-filled exhaust valves, which feature hollow stems partially filled with a special sodium material that melts and liquefies around 205 degrees F (96 C). The inertia from the valves' opening causes the liquefied sodium to move up inside the stem, dissipating heat better than a conventional exhaust valve.
To accommodate the large valve face diameters, the heads' valve seats are Siamesed; and, taken from experience with the engines of Corvette race cars, the LS7's valve angles are held at 12 degrees – vs. 15 degrees for the LS3 – to enhance airflow through the ports to get it into the combustions quicker and with less turbulence.Dry-sump oiling system
A dry-sump oiling system is used with the LS7 and is designed to keep the engine fully lubricated during the high-cornering loads the Camaro Z/28 is capable of producing. A 10.5-quart reservoir delivers oil at a constant pressure to a conventional-style oil pump pick-up at the bottom of the engine. The pressurized oil feed keeps the oil pick-up continually immersed in oil at cornering loads exceeding 1.05 g.
Oil circulates through the engine and down to the oil pan, where it is sent back to the reservoir via a scavenge pump. The large-capacity reservoir, combined with a high efficiency air-to-oil cooler, provides necessary engine oil cooling under the demands of the engine's power output. With the dry-sump system, oil is added to the engine via the reservoir tank – which includes the oil level dipstick.Then and now
The engine in the original 1967 Z/28 was a 302-cubic-inch (4.9L) small-block rated at 290 horsepower and 290 lb-ft of torque. It was created by marrying the iron cylinder block of Chevrolet's 283 V-8, which had 4.00-inch bores, with the crankshaft of the larger-displacement 327 engine, which delivered a 3.00-inch stroke, creating the 302-cubic-inch displacement that accommodated the engine-size regulation for SCCA's Trans Am-2 class.
With its aluminum cylinder block and heads, as well as a composite intake manifold – and no heavy carburetor – the LS7 engine in the 2014 Camaro Z/28 weighs approximately 20 percent less and produces nearly 73 percent more horsepower than the 1967 302 engine.
Founded in 1911 in Detroit, Chevrolet is now one of the world's largest car brands, doing business in more than 140 countries and selling more than 4.5 million cars and trucks a year. Chevrolet provides customers with fuel-efficient vehicles that feature spirited performance, expressive design, and high quality. More information on Chevrolet models can be found at www.chevrolet.com.Source - Chevrolet
28 Ways Chevrolet Camaro Z/28 Rules the Road CourseDETROIT
– Lightweight, nimble and incredibly powerful, the original Z/28 was designed for road racing. The 2014 Z/28 carries the same spirit, with every detail engineered specifically to create the ultimate track-capable Camaro.
To enable the Z/28 to quickly lap the most challenging road courses, engineers and designers focused on strengthening three key areas during development:
◾Increased grip: The Z/28 is capable of 1.08 g in cornering acceleration, due to comprehensive chassis revisions
◾Increased stopping power: The Z/28 features Brembo carbon ceramic brakes capable of 1.5 g in deceleration, and consistent brake feel, lap after lap
◾Reduced curb weight: The naturally aspirated Z/28 weighs 300 pounds less than the supercharged Camaro ZL1 and 55 pounds lighter than the Camaro 1LE - with changes ranging from lightweight wheels to thinner rear-window glass.
To enhance the balance and overall driving feel of the Z/28, 100 percent of the unsprung mass – suspension, wheels, tires and brake system – differs from the Camaro SS.
'Like the first-generation Z/28, the new model is a road racer first and foremost. It features a wide range of state-of-the-art exterior performance modifications, and weight-reduction measures. It was bred for the track, pure and simple,' said Mark Stielow, Camaro Z/28 engineering manager.
Exterior Design and Aerodynamics
With the driving goal focused on peak performance capability, nothing on the exterior is without purpose. It shares several racing-inspired, design best practices and lessons learned with the 2014 Corvette Stingray. New and revised exterior content was developed to improve aerodynamics, powertrain cooling and brake-system cooling, helping the Z/28 produce 150 pounds of downforce at 150 mph.
Here are 28 features that helped the Camaro Z/28 lap Germany's famous Nürburgring road course four seconds faster than the Camaro ZL1.1. Rear spoiler with 'wickerbill'
2. Únique front fascia
The aerodynamic coefficient of drag goal was achieved with original Camaro SS content and an accessory rear spoiler, but to meet the downforce requirements for Z/28, the spoiler was modified with a 'wickerbill' – a small, vertical tab at the edge of the spoiler. Although an aesthetically minor change, it helped improve rear lift performance by 70 counts. That allows the Z/28 to handle turns at higher speeds and deliver greater overall high-speed stability.
The Z/28's unique front fascia is based on the Camaro SS, but the fog lamps, air dam and the upper-base grille are replaced with covers that reduce weight from deleting fog lamps, an air duct support bracket, an airflow-optimized grille for enhanced cooling and a modified fascia bottom that incorporates provisions for the brake cooling ducts. They funnel air from the lower grille to the wheelhouse liners and the unique splitter.3. Front splitter
4. Hood extractor
The Z/28's front splitter is a large aero panel that provides downforce at the front of the car, enhancing cornering capability and high-speed stability. Designed to withstand 250 pounds of downforce at its tip, it is matched with an aero closeout panel under the front of the engine compartment that also enhances aero characteristics – along with molded-in aero features forward of the front wheels.
A functional carbon fiber hood extractor provides increased engine cooling by allowing hot air an exit route. The design is similar in function to the extractor featured on the Camaro ZL1.5. Rocker moldings and wheel flare moldings
Specific rocker moldings provide aggressive styling and improved aerodynamic performance, while unique wheel flare moldings cover the Z/28's wide tires. Deflectors at the bottom-front corners of the front wheel flares contribute to the car's downforce-producing aerodynamics.
6. Front wheelhouse liners
Únique wheelhouse liners with closeouts work with the vehicle underbody to make the most of airflow.7. Belly pan
Engine : 7.0 L., 8-cylinder
Power: 500 hp
Torque: 470 ft-lbs
The Z/28 underbody incorporates a belly pan that helps reduce front lift. Developed using computational fluid dynamics and wind-tunnel testing. It provides an aero benefit and contributes to drivetrain cooling. Modified NACA duct profiles are designed to draw air into the underbody tunnel area, where the highly energized air provides extra cooling for underbody components affected by the exhaust heat energy of the LS7 engine.
Making the most of mass is a key component of the Z/28's performance capability, contributing to a balanced feel and a high power-to-weight ratio. With a curb weight of 3,820 pounds and 505 horsepower (376 kW), the Z/28 has a power-to-weight ratio of 7.6:1 – or one horsepower for every 7.6 pounds of the car's mass. That compares favorably to other performance coupes, including Audi RS 5 (8.9:1), BMW M3 (8.9:1) and Porsche 911 Carrera (8.7:1).
The Z/28's curb weight is approximately 300 pounds less than the ZL1 and about 55 pounds less the 1LE, despite features that add mass, including a dry-sump oiling system with a 10.5-quart reservoir, higher-mass chassis and suspension components such as the support brackets for the front splitter. Engineers offset the mass of those necessary features with a targeted weight-loss program that trimmed the Z/28 to the essential elements of performance.8. Thinner rear window glass
Reducing the thickness of the rear window glass from 3.5 mm to 3.2 mm saved 400 grams.9. Lightweight rear seat
Although it looks like the rear seat in the SS, the Z/28's rear seat is 4.7 kilograms lighter due to reduced seat foam and a fixed seatback design with no folding/pass-through feature.10. Lightweight wheels and tires
The Z/28's 19-inch aluminum wheels save 8.7 kilograms compared to Camaro SS wheels. Their thin split-spoke design features a back-cut at the rim, reducing mass at the outermost area of the wheel – and reducing spin inertia by 5 percent, for enhanced performance. They are matched with track-capable tires that save 13.2 kilograms per vehicle, compared to the SS.11. Carbon ceramic brake rotors
Lighter than comparably sized steel brake rotors, the Z/28's carbon ceramic rotors save 9.6 kilograms, while also reducing un-sprung weight for immediate, responsive handling.12. No Air conditioning
Because the Z/28 is intended for the track, air conditioning was deemed non-essential component. The deletion saved 12.9 kilograms. Air conditioning is available as an option.Powertrain
The Camaro Z/28's powertrain is rooted in the 7.0L LS7 engine that made the Corvette Z06 an instant performance icon. With an SAE-certified 505 horsepower (376 kW) and 481 lb-ft of torque (652 Nm), it complements the lightweight vehicle components to give the car its 7.6:1 power-to-weight ratio while delivering the power to accelerate strongly out of corners and achieve high straightaway speeds.
A close-ratio six-speed manual transmission is the only transmission offered and power is distributed to the rear wheels via a limited-slip differential featuring a helical gear set, rather than traditional clutch packs. The new design enables the driver to apply more power and get through corners faster, by continuously adjusting the torque bias to maximize available traction.
The differential works in unison with Chevrolet's proprietary Performance Traction Management system, which allows drivers to adjust the level of throttle and brake intervention to match their capability and driving environment.
13. LS7 engine with dry-sump oiling
The racetrack-bred LS7includes features designed for the high-rpm environment of the track, including a durable forged-steel crankshaft, lightweight titanium connecting rods and high-flow cylinder heads with lightweight titanium intake valves. It also features a racing-style dry-sump oiling system that helps ensure adequate oil pressure during high-load cornering.14. Air intake system
The LS7 uses a unique open air box intake system to make the most of high-rpm airflow into the engine. It features a K&N conical air filter and delivers the highest airflow performance of any production Camaro filter system. The air cleaner seals around bottom of the hood, reducing the chance of recirculated hot air being drawn into the engine.15. Track-capable fuel system
Engineered to meet the fueling demands of the high-output LS7 engine during aggressive driving maneuvers, the road course-ready fuel system is designed to keep the primary fuel pump reservoir full even under hard cornering and maximize the amount of fuel available during high-performance maneuvers around the most grueling road courses.
16. Active dual-mode exhaust system and high-flow converter assembly
The 2014 Z/28's dual-mode exhaust system is engineered to provide high-flow and muscular sound character under aggressive acceleration, while attenuating noise levels in cruising conditions. It actively controls valves that change the flow path of the exhaust for the desired performance, depending on transmission gear and engine speed. With the valves open, the system produces less back pressure and more power from the engine. Additionally, the converter assembly has been modified to increase flow and horsepower.17. TREMEC TR6060 six-speed manual transmission
Úsed in the Camaro ZL1 and Cadillac CTS V-Series, the TREMEC TR6060 six-speed manual has the capability to stand up to high-performance engines, with short throws, smooth gear synchronization and excellent shift feel. Design features include a combination of double-cone and triple-cone synchronizers on all gears. Double-cone synchronizers have two friction surfaces to affect gear acceleration and triple-cone synchronizers have three friction surfaces – the greater the friction surface, the easier the transmission is to shift.18. 5.1-ratio short-throw shifter
The Z/28 uses a 5.1-ratio short-throw shifter that provides quicker, more precise-feeling gear changes – similar to ZL1 and SS 1LE models.Chassis and Suspension
The Z/28's performance focus is maximum cornering, braking and lap times. Comprehensive chassis and suspension changes, including a lower center of gravity, specific stabilizer bars, higher-rate coil springs and other chassis and suspension features, enable more than 1.05 g in lateral acceleration and 1.5 g in deceleration. Racing-bred dampers, tires and carbon ceramic brakes play important roles in predictable and consistent maximum performance with every lap.
19. Strut tower brace
The Z/28 uses the same tower strut brace as the Camaro SS 1LE to provide extra chassis stiffness by tying the towers together. It transmits the load of each strut tower during cornering via tension and compression of the strut bar, which shares the load between both towers and reduces chassis flex.
20. Zero-preload limited-slip differential
A high-performance, zero-preload limited-slip differential is employed to make the most of cornering capability and cornering exit traction. It features a concentric helical gear set that generates friction proportional to the input torque and allows continuous torque biasing and differentiation to be managed between the drive wheels. A conventional limited-slip differential uses preloaded clutch plates and springs to create a fixed amount of friction that is always present).
As torque increases from the engine, the separation forces in the gears increase to drive increased friction, maximizing the capability of individual-wheel antilock brake function during corner-entry braking, mid-corner speed and corner-exit traction. On the track, that translates into quicker lap times, by allowing the Z/28 to put down more power in the turns, with greater traction, greater handling precision and enhanced steering centering. The axle ratio is 3.91.21. Differential cooler
The Z/28's differential cooler pulled from the knowledge gained in developing the ZL1, which is unlike that found in other sports cars. It incorporates an integral heat exchanger, eliminating the need for an external pump, wiring, relays, temperature sensors and fan. This innovative system pumps overcooled transmission fluid to a heat exchanger inside the differential housing, which removes excess heat from the differential fluid, reducing temperatures by more than 100 degrees F, helping the differential maintain cool, stable performance throughout the most aggressive road course sessions.22. Úprated lower control arm ride link 'travel limiter' bushing
This higher-durometer part offers 50-percent greater stiffness at high load than the SS, improving steering feel and brake force deflection steer while providing more consistent performance for continuous road-course driving. Additionally, the lower control arm lateral link handling bushing is revised on all 2014 Camaros for more consistent track performance.23. Úprated rear upper control arm bushing and lower trailing link bushings
The 'P-bracket' bushing for the rear upper control arms is redesigned with increased durometer and eliminated voids to improve lateral stiffness during hard cornering, as well as toe-change compliance during braking. The stiffness rate of this part is increased 400 percent, compared with the SS component. Similarly, 25-percent stiffer lower inner and outer trailing links bushings deliver improved lateral stiffness during hard cornering and reduced toe-change compliance during hard braking.24. Higher-rate coil springs and smaller-diameter stabilizer bars
Engineers increased the stiffness rate of the Z/28's coil springs – the amount of energy required to compress them – by 85 percent in the front and 65 percent in the rear. The specific tuning of the springs reduces body movement, which allowed the engineers to use smaller, lighter stabilizer bars to maximize grip during hard braking, cornering and acceleration. The solid stabilizer bars are 25mm in diameter in the front and 26mm in the rear – compared to the 28mm front and 27mm solid bars used on the Camaro SS 1LE.25. DSSV® damper technology
The Z/28 is the first high-volume production road car to employ racing-derived DSSV® or Dynamic Suspensions Spool Valve damper technology from Multimatic. The dampers rely upon a pair of self-piloted spool valves to control fluid through tuned port shapes rather than conventional deflected disc dampers. The design of the inverted-monotube front strut and aluminum-body monotube rear hydraulic dampers offers maximum response, stiffness and tuning optimized for the track, with the highest level of damper predictability, accuracy and repeatability. In short, they deliver optimal wheel control and vehicle control – and they provide almost double the stiffness when compared to the dampers on the Camaro SS 1LE.26. Performance Traction Management
Performance Traction Management, or PTM, is an advanced system that integrates the chassis mode selection, Traction Control and Active Handling Systems, tuned specifically in the Z/28 for optimal road-course performance and consistency. PTM allows the driver to press the accelerator pedal to wide open at the exit of the corner and manages acceleration based on the given vehicle dynamics. Five performance levels or modes are available to accommodate a variety of driving conditions.27. Nineteen-inch wheels and Pirelli PZero Trofeo R tires
A major contributor to the lateral performance of the Z/28 is the wheel-and-tire combination, featuring the widest front wheels/tires of any comparable sports coupe. Engineers incorporated a comparatively smaller, 19-inch package, with P305/30/ZR19 tires front and rear – mounted on 19x11-inch front wheels and 19x11.5-inch rear wheels – which contributed to lowering the center of gravity 33mm, for enhanced handling. The forged aluminum wheels are lighter and stiffer than comparable SS wheels, and they're used with Pirelli PZero Trofeo R motorsport compound tires. Designed for summer use on the street, the tires' unique compound was developed for the track and provides a large contact patch for maximum grip. They also offer a 29.5-pound weight advantage over Camaro SS tires.28. Brembo® carbon ceramic brakes
Large, robust and track-capable Brembo® carbon ceramic matrix brakes deliver exceptional braking capability, while weighing in 9.6 kilograms under the comparable Camaro SS brakes. The brakes offer unmatched levels of brake feel, lap after lap, with tremendous fade resistance, and the Z/28 is expected to produce 60-0 mph stopping distances of less than 120 feet. The system includes large, 15.5 x 1.4-inch two-piece front rotors matched with fixed monobloc, six-piston front calipers, and 15.3 x 1.3-inch two-piece rear rotors with four-piston calipers. They also feature high-performance pad material with increased pad surface area, and electronic pad-wear sensors.
Founded in 1911 in Detroit, Chevrolet is now one of the world's largest car brands, doing business in more than 140 countries and selling more than 4.9 million cars and trucks a year. Chevrolet provides customers with fuel-efficient vehicles that feature spirited performance, expressive design, and high quality. More information on Chevrolet models can be found at www.chevrolet.com.Source - Chevrolet
Related Reading : Chevrolet Camaro History
The Chevrolet Camaro was introduced in 1967 as a compact car specifically built to provide competition for the highly popular Ford Mustang. This pony car was built atop of the same F-Body platform as the Pontiac Firebird, which had a similar production lifespan of 1967 through 2002.During the preproduction stages of the Chevrolet Camaro, General Motors codenamed the vehicle Panther. The....Continue Reading >>