Using a 3 angle valve seat cutting tool for engine builds

If you're trying to squeeze every bit of performance out of a cylinder head, you've probably realized that a 3 angle valve seat cutting tool is one of the most important pieces of gear in the shop. It isn't just about making things look clean under the valve cover; it's about airflow, heat transfer, and making sure that valve seals tight every single time it slams shut. If you've ever felt an engine that just seems "lazy" despite having good parts, there's a solid chance the valve job was the culprit. ...

February 23, 2026 · 7 min · Chuckl Marileni