Headers are a set of tubes that replace the stock exhaust manifolds on an engine. They are typically made of a higher-quality material, such as stainless steel, and have a larger diameter and smoother bends than the stock manifolds. This allows for improved exhaust flow, which can lead to increased power and performance.
The amount of horsepower gained from adding headers will depend on the specific engine and exhaust system. Some engines may benefit more from headers than others, and the gains may also be more noticeable at higher engine speeds. Additionally, other modifications to the engine, such as a cold air intake, performance camshaft, or aftermarket exhaust system, can further increase the horsepower gains from adding headers.
Overall, headers can be a worthwhile upgrade for a V8 engine, offering improved exhaust flow and modest gains in horsepower and performance. However, it's important to consider the specific engine and exhaust system, as well as other modifications, to determine the potential benefits of adding headers.
