## What Engines Are in NASCAR Cars?
NASCAR engines are among the most powerful and technologically advanced in the world of motorsports. These engines are designed to produce immense power while remaining reliable and durable enough to withstand the rigors of stock car racing.
Engine Specifications
NASCAR engines are based on the Chevrolet LS-based architecture. This engine design is a pushrod V8 with a displacement of 5.86 liters (358 cubic inches). The engines are equipped with dry sump lubrication, which helps to prevent oil starvation under extreme racing conditions.
The engine’s block is made of aluminum, which is lightweight and helps to dissipate heat. The crankshaft is forged steel, and the connecting rods are titanium or aluminum. The pistons are aluminum or steel, and the cylinder heads are aluminum.
The intake manifold is a high-rise, dual-plane design that is designed to optimize airflow into the engine. The throttle body is a 90mm diameter, and the fuel injectors are located in the intake manifold.
The exhaust system is a stainless steel, equal-length design with a “H” crossover pipe. The exhaust manifolds are cast iron, and the catalytic converters are located in the exhaust system.
Power Output
NASCAR engines produce between 550 and 750 horsepower, depending on the track and race conditions. The engines are tuned to produce maximum power at high RPMs, typically between 8,500 and 9,500 RPM.
The engines are also designed to produce a lot of torque, which is necessary for accelerating out of corners. The engines typically produce between 500 and 600 lb-ft of torque.
Reliability and Durability
NASCAR engines are designed to be extremely reliable and durable. The engines must be able to withstand the rigors of racing, which includes high RPMs, high temperatures, and frequent crashes.
The engines are built with high-quality materials and components, and they are meticulously maintained. The engines are also equipped with a variety of sensors and monitoring systems that help to ensure that the engines are operating properly.
Cost
NASCAR engines are very expensive to build and maintain. The cost of a new NASCAR engine can range from $100,000 to $250,000. The cost of maintaining an engine can also be significant, as the engines require regular service and maintenance.
Conclusion
NASCAR engines are among the most powerful and technologically advanced in the world of motorsports. These engines are designed to produce immense power while remaining reliable and durable enough to withstand the rigors of stock car racing. The engines are also very expensive to build and maintain, but they are essential for success in NASCAR.
