Kibblewhite Precision C630 Guide, Intake + 0.010

• Type: Valve Guide

The Kibblewhite Precision C630 Intake Valve Guide (+0.010) is designed for optimal airflow and durability, featuring a streamlined profile that minimizes obstruction while maintaining critical thickness in high-temperature areas. The guide's nose shape can enhance airflow even without additional modifications. It includes a flange or a diameter reduction, depending on factory washer compatibility, to ensure proper installation height without repeated measurements. Made from premium C630 racing bronze, this guide contains 80% copper, 5% nickel, and 10% aluminum, offering superior thermal conductivity, wear resistance, and corrosion protection. The high copper content improves heat dissipation, while the aluminum content enhances compatibility with aluminum cylinder heads. The guide's tight concentricity tolerances help maintain precise valve-to-seat alignment, reducing material removal during valve jobs and ensuring consistent chamber volumes. This material's resistance to galling allows for tighter clearances, improving valve-to-seat sealing and oil control. A transition radius at the nose-to-body junction prevents galling during installation. The guide is designed for use with aggressive cam profiles and modern performance fuels. Each kit includes two valve guides unless otherwise noted.