Now that we have a better understanding of why headers work, the question now becomes do they work in the presence of boost? To find out, we decided to run a series of tests by comparing headers ...

One of the easiest ways to tune an engine's performance is with the intake manifold. Yes, the camshaft can have a bigger role in horsepower production, but a camshaft swap includes real work and more ...

Let's cut to the chase: The LA small-block racing engine we've been following, built by Michigan's Valley Performance for the Race Engine Challenge, took home the gold. Based on average horsepower per ...