When checking a modification, it is imperative that the test procedure remains constant. The most common component, the cylinder head, is wide open to testing mistakes. Similarly, flow data from ...

Part I in the October 2002 issue began to unravel the mystery of deciphering airflow numbers that are derived from flow bench testing. We addressed the question, "Why test for airflow?" and detailed ...

In the early-'90s, GM introduced the Second-Generation LT1 small-block. It featured reverse-flow cooling and an aluminum cylinder head with a new port configuration. In essence, the company created ...

It's tempting to reuse cylinder head bolts, especially if they pass the eye test. But there are some kinds of bolts you should never, ever reuse.