On a recent trip to Vrbancic Brothers Racing to witness a dyno pull, we had the chance to chat with Bob and George about the various project engines in their shop. One of their customers brought in an ...

As the first of the rectangle-port cylinder heads that subsequently came through the years (i.e. LS3, L92), the LS7 cylinder head still reigns supreme as the best-flowing two-valve production ...

When the 30-year evolution of the late-model Mustang hobby is assessed solely from a bolt-on-parts perspective, there is no arguing that a lot of progress has been made over the course of those three ...

Edelbrock developed its Performer RPM Pontiac cylinder head during the '90s as a high-flow replacement for the desirable round-port originals. With as-cast intake airflow peaking around 280 cfm, it ...