How do you build a 375 horsepower 327?

To build a 375 horsepower 327 engine, start with a solid block and consider a high-performance camshaft to optimize airflow. Use a set of aluminum heads with larger valves to improve combustion efficiency, and pair them with a high-rise intake manifold and a suitable carburetor, typically around 750 cfm. Additionally, ensure proper tuning and consider using a performance exhaust system to maximize power output and achieve your target horsepower. Finally, focus on high-quality components and assembly techniques to ensure reliability and performance.