► 2015 Chevrolet Camaro Z28 (505 hp) Full Throttle!

The 2015 Camaro Z/28 is the most track-capable model in its history, building on the legacy of the original SCCA Trans Am-series contender introduced in 1967. While the new Camaro Z/28 is not intended to compete in a specific race series, it is solely focused on track capability. In fact, its unique exterior is designed like a race car to produce downforce that presses the car against the track for greater grip – up to 1.08 g in cornering acceleration – and faster lap times.
The aerodynamically optimized design helped the Camaro Z/28 log a 7:37.47 lap on Germany’s legendary Nürburgring road course – four seconds faster than the Camaro ZL1, and faster than published times for the Porsche 911 Carrera S and the Lamborghini Murcielago LP640.
Additional contributors to the car’s track performance included greater stopping power – the Z/28 features Brembo carbon ceramic brakes capable of 1.5 g in deceleration, and consistent brake feel, lap after lap – and 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. In fact, 100 percent of the un-sprung mass (suspension, wheels, tires and brake system) has been changed from the Camaro SS, dramatically enhancing the balance and overall driving feel of the Z/28.

The Camaro Z/28’s 7.0L LS7 engine is rated at 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 enviable 7.6:1 power-to-weight ratio – and deliver the power to accelerate strongly out of corners and achieve high straightaway speeds.
The LS7 was bred on the racetrack, with 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.
A unique open air box intake system optimizes high-rpm airflow into the engine. It features a reusable 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 recirculated hot air will be drawn into the engine.
The 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. With the valves open, the system produces less back pressure and more power from the engine.
A TREMEC TR6060 six-speed, close-ratio manual transmission backs the LS7 engine. It has 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.
The transmission is used with a 5.1-ratio short-throw shifter that provides quicker, more precise-feeling gear changes – similar to ZL1 and SS 1LE models.

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